Best cell phone battery charger cases according to redditors
We found 237 Reddit comments discussing the best cell phone battery charger cases. We ranked the 115 resulting products by number of redditors who mentioned them. Here are the top 20.
We found 237 Reddit comments discussing the best cell phone battery charger cases. We ranked the 115 resulting products by number of redditors who mentioned them. Here are the top 20.
There's also this battery for the Note II. And I guess you could get the 64GB model and add a 64GB microSD card for 128GB (which is still half of what this guy has).
Yup, I've always had android and people would always ask why. You tell them you get more options and more freedom. Now, just as the new Galaxy phones are becoming more and more restricted people are switching to them claiming the same thing. It's a little funny. Yes, Android is still far more "free" than iOS but it's becoming increasingly harder to find a free phone (expandable memory, removable battery, easy to take apart, etc)
Edit:
For those curious, I have an LG G4 and I love it, especially with this battery
They make both kinds. Here's the full back and case/battery for my note 2 :http://www.amazon.com/gp/aw/d/B00BYEMNA6/ref=pd_aw_sbs_10?pi=AC_SY230_QL60
For those who are unfamiliar with the product, here it is on Amazon. It's an aftermarket battery for the LTE/CDMA Galaxy Nexus (Verizon, Sprint) that has three times the capacity of the standard battery.
ZeroLemon recommends that you condition the battery before real-world usage by draining it fully six times which I've done over the past week. The manufacturer also recommends that you only recharge the phone once you reach 2% even after conditioning the battery for "optimal use."
Test conditions:
Test results:
Here are some other test results taken on previous days:
Problems:
Conclusion:
Despite the product's flaws, I'm very happy with its performance and would recommend it to anyone who hasn't already upgraded to a better phone. Instead of having to juggle between three extended batteries during the day or remembering to disable 4G LTE to save battery life, I can use the phone with all the features enabled without having to worry about making it through the day. It currently costs ~$40 on Amazon which I find reasonable considering that Samsung's 2100mAh extended battery is being sold for ~$15.
I'm using this - battery usually lasts 2-3 days of moderate use without recharging. http://www.amazon.com/warranty-ZeroLemon-Guarantee-Compatible-ZL-i515-black-5900/dp/B00AZZOH04
EDIT: Yes. It's big. But it comes with its own case, and works beautifully. The cheap price and 180 day guarantee is incredibly nice. So far, 5 months in, I've had no need to even think of the warranty.
Here you go
Get the zerolemon 5900.
http://www.amazon.com/warranty-ZeroLemon-Guarantee-Compatible-ZL-i515-black-5900/dp/B00AZZOH04/ref=sr_1_sc_1?ie=UTF8&qid=1371083232&sr=8-1-spell&keywords=galaxy+nexus+nolemon
> zerolemon 8500mah battery
I would assume it is this
https://www.amazon.com/dp/B01DXTIN6W
https://www.amazon.com/dp/B01DXTIN6W
like this?
I would actually recommend the zero lemon battery and case. The added size is worth the tradeoff for that massive battery.
http://www.amazon.com/gp/aw/d/B00AZZOH04/ref=mp_s_a_1_1?qid=1394762715&sr=8-1&pi=SY200_QL40
https://www.amazon.com/gp/aw/d/B00J2H6PX8/ref=ya_aw_od_pi?ie=UTF8&psc=1#
The price even went down!
At least some other manufacturer already made one.
https://www.amazon.com/Alpatronix-BXX-Rechargeable-Protective-Certified/dp/B075LW155D
I have this one and it works well enough. It has wireless charging and charges the phone first. It's not on the same level as apples first party cases and won't report in the widget but it works just fine. Quite bulky though...
[iPhone X Battery Case Qi Wireless Charging Compatible, Alpatronix BXX 5.8-inch 4200mAh Slim Rechargeable Extended Protective Portable Charger Case for iPhone X Apple Certified Chip; iOS 11+] – Black](https://www.amazon.com/dp/B075LW155D/ref=cm_sw_r_cp_api_gU7RAbDEQGK1J)
Yup; https://www.amazon.com/dp/B01DXTIN6W
I usb tether constantly which killed my battery. bought one of these http://www.amazon.com/ZeroLemon-Extended-Protection-Compatible-4897010519648/dp/B01181ODJI?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00 and it's a dream. thick as shit though.
The amazon listing says it has type C. 5V/3A charging.
And here is the non-mobile link - http://www.amazon.com/warranty-ZeroLemon-Protection-Guarantee-Compatible/dp/B00BYEMNA6
I have the Alpatronix BX410 3500mAh case. The included screen protector is crap but the case works.
This one I have the same complaints at the bottom about the back cover but thats because I dropped it more than a few times.
http://www.amazon.com/LG-G4-ZeroLemon-Protection-4897010519648/dp/B01181ODJI
Most major phones do have options available to make them into a "fatty ass brick that lasts 2 days".
https://www.amazon.com/NEWDERY-Wireless-Charging-Compatible-Rechargeable/dp/B07YV5Z5YQ
My note 3 with replaceable battery and this 7500mah laughs histerically at you
5900, not 5800 http://amzn.com/B00AZZOH04
It might be a bit more expensive, but the ZeroLemon 8500mah battery is AMAZING. At the time when the 3000mah battery would die, my 8500mah battery still has 70% left on it!
https://www.amazon.com/ZeroLemon-Extended-Protection-Compatible-4897010519648/dp/B01181ODJI
Nexus 6P Battery Case, ZeroLemon Google Huawei Nexus 6P High Capacity 8500mah Rugged Battery Case - Black https://www.amazon.com/dp/B01DXTIN6W/ref=cm_sw_r_cp_apa_tKgIxbS0HN4P9
Released today.
If battery life is why you're looking to replace the phone, maybe look into replacing just the battery since the G4 has a removable back. On my G3 I used to run a 9000mAh battery similar to the one from the product linked below. Zerolemon is an excellent solution if you don't mind a bit of extra weight and size.
https://www.amazon.com/dp/B01181ODJI/ref=cm_sw_r_cp_apa_bngcAbDBNJTRH
Have you considered a battery case?
CrystalTears Rose Quartz Mandarin... https://www.amazon.ca/dp/B07GH48ZHC?ref=ppx_pop_mob_ap_share
https://www.amazon.com/dp/B01DXTIN6W
Just so we're clear. I have this model.
The squared corner model was not available when I received the Note 9.
I don't like how the top of the case (around the camera) tapers to a point. While it makes it more comfortable for pocket carry, it is also harder to grasp if you pocket it "camera first."
This especially applies when you're using a pouch. Speaking of pouches. It's way too bulky to fit into a condor pouch.
Lastly. It gets warm when it's doing it's job. I don't know how this affects the phone's performance.
zero lemon lg g4 8500mah battery I've had for about 2 years and it still holds approximately 6000mah. I intend on upgrading from my sister's s7 to the LG v20. Zero lemon has a 10,000mah for the v20.
It sounds like you use your phone a lot, which means that your battery also gets used a lot. I always charge my phone when I can, I keep it plugged in when I'm driving or when I'm at home to fast chargers. Charges really fast and lasts several hours of screen on time. My advice is to 1st get an external battery case that will charge your phone when the phones battery dies. If that doesn't work for you then get the battery changed and then also buy an external battery case. Bottom line is NO PHONE AVAILABLE is gonna last all day and night without being charged. Also Batteries Plus stores will do it for around $80 and use a genuine Rayovac or Duracell battery pack, I forgot which one. Here is a good external battery case which will charge your phone more than once.
https://www.amazon.com/dp/B01JHI2SOQ/ref=cm_sw_r_other_apa_I3NWBbDR9B04P
If you want new life for your galaxy nexus get the extended battery IMO http://www.amazon.com/warranty-ZeroLemon-Guarantee-Compatible-ZL-i515-black-5900/dp/B00AZZOH04/ref=sr_1_1?ie=UTF8&qid=1372894910&sr=8-1&keywords=zero+lemon+galaxy+nexus
Saw this listing on Amazon --> https://www.amazon.com/dp/B072KBXLG7/ref=cm_sw_r_cp_apa_LhkHzbCKHTZD9. Ordered it immediately.
Amazon: https://www.amazon.com/PowerBear-Samsung-Extended-Battery-Protective/dp/970771638X
I ended up going with this one from Amazon: https://www.amazon.com/gp/product/B00OQLMJR6/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
I chose this one because it was Prime eligible, and appeared to be one of the few legitimate "new in retail box" batteries for sale on there. I was really skeptical about buying one of the dirt cheap batteries that claimed to be official, like: https://www.amazon.com/Samsung-Galaxy-Standard-Battery-3220mAh/dp/B00WBH9QQE/ - I made that mistake with a phone in the past and it was not a great experience.
I've been using it regularly for about 3.5 weeks now and it works great. I'm considering getting another as a spare since I plan to have my Note for a long time.
If you don't care whether or not the battery is OEM, I've heard good things about PowerBear: https://www.amazon.com/PowerBear-Battery-Samsung-T-Mobile-Warranty/dp/B01FF1XJX8/ - someone linked to the 7,500mAh version in this thread: https://www.amazon.com/PowerBear-Samsung-Extended-Battery-Protective/dp/9652676764
Good luck!
Cheapest and best option
iPosible For LG G4 Extended Battery BL-51YF [ 6700mAh] https://www.amazon.com/dp/B01K72GI2O/ref=cm_sw_r_cp_apa_KRKqyb052752P
And there's another brand that's $12 more idk what the difference is other than branding PowerBear LG G4 Extended Battery [6500mAh] https://www.amazon.com/dp/B00ZMLOHBA/ref=cm_sw_r_cp_apa_3SKqybVWKXA21
I'm using the cheaper one. So far it's been life changing . And its not too bulky .
And if you don't care about bulk at all you can get the tank 8500mah
LG G4 Battery Case, ZeroLemon LG G4 8500mAh TriCell Extended Battery https://www.amazon.com/dp/B01181ODJI/ref=cm_sw_r_cp_apa_HUKqybQXV593H
Probably using this thing. At least, I'd hope he is at this point.
TL:DR: It's not about the case, but about the battery itself. And there's more than one option on the market, but the ZL is the undoubted king in single-battery size and proven reliability.
The ZL kit isn't about the case, but the battery itself. It's so big in capacity and design that it has to come with the TPU case it comes with. However, there are other big-battery options out there. The batteries themselves are smaller in capacity, but fit well enough in the battery compartment that they get away with using different rear backs instead.
Here's the PowerBear battery as an example. http://www.amazon.com/PowerBear%C2%AE-LG-G4-Extended-BL-51YF/dp/B00ZMLOHBA/
And an MPJ-branded model: www.amazon.com/Extended-Battery-MPJ-6000mAh-Capacity/dp/B015XBS45I/
One from Hyperion: www.amazon.com/Extended-Battery-Hyperion-6000mAh-Battery/dp/B00ZAJMM02/
Coincidentally, I also found an actual battery case too. This is more in line with what you have to get for a fixed-battery phone like the Galaxy S6 and iPhone. www.amazon.com/Battery-Case-Buttons-Charging-Extended/dp/B0170FDR4S/
And, of course, the tried-and-true ZeroLemon. www.amazon.com/LG-G4-ZeroLemon-Protection-4897010519648/dp/B01181ODJI/
Honestly, looking at prices you could get two of the PowerBear/Hyperion/MPJ for the same cost as the ZL and wind up with 12-13000mAh instead of the ZL's 8500, but you do lose the convenience of a single battery. And I can't vouch for those smaller batteries because I haven't seen many reviews/input from others. I'll keep looking, because I'm genuinely curious.
Oh, one last tip. If you go big-battery, get yourself a charger that supports Qualcomm Quick Charge 2.0. The one that comes with the phone doesn't support it, but the phone itself does. And because big batteries mean long charge times, that QC charger will be quite the helpful little thing.
https://www.amazon.com/ZeroLemon-SlimPower-Extended-Charging-Portable/dp/B00BYEMNA6/
Hi! Thank you for the response!, yeah I tried usb C peripherals, was not successful.
And after researching battery mods, I discovered that the Turbo Power Mod might be better for my situation as I dont have to use the phone's charging port, and the incipio mod will not work for my situation as charging the mod requires using the phone's charging port or wireless charging which I dont have. Do you think I should get the Turbopack?
https://www.amazon.com/MOTCB-89929N-Moto-TurboPower-Pack/dp/B072KBXLG7/ref=sr_1_1?s=wireless&ie=UTF8&qid=1503669737&sr=1-1&keywo
Happy with this one and didn't have to break the bank https://www.amazon.com/dp/B00ZDKWN0M/ref=cm_sw_r_cp_apa_3uGnybNE05R8W
I bought the Sedio 3800 mAh battery with this case. It gives me about 18-20 hours of pretty normal usage with 3 hours screen on time. I never run into an issue of not having enough power at the end of the day anymore.
People also really seem to like the ZeroLemon 5900 mAh extended battery.
Marketing and availability was poor. They didn't push for them like the carriers do.
US buyers are still stuck in the "oh, monthly? Cheaper!" mindset.
I've bought two S4 devices specifically for the "Play" ROM. They are still great devices today, especially outfitted with a flip case and extended battery.
Launcher: Nova
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Silver - #C3C7B3White: #FFFFFFPhone Details for extra fun:
Model: Galaxy Note 8
Case: ZeroLemon for ~8500mah total
Grips:
Hi, i just ordered this one
http://www.amazon.com/gp/product/970771638X?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
Is 7400 so i hope is not as big as the 10000 one, also it comes wit the case.
Sure, it's this one: https://www.amazon.com/gp/product/B01JHI2SOQ/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
http://www.amazon.com/gp/aw/d/B00A533DBA
For white
http://www.amazon.com/gp/aw/d/B00BYEMNA6
For black
https://www.amazon.ca/Battery-Portable-Charging-Protection-Extended/dp/B07GH48ZHC/ref=mp_s_a_1_1_sspa?keywords=lg+v30+battery&qid=1564404134&s=gateway&sprefix=Lg+v30+b&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFKR1UzQklYNjVQUzUmZW5jcnlwdGVkSWQ9QTA3MzU0MDAxUjQ4M0w4UTVWNjVRJmVuY3J5cHRlZEFkSWQ9QTAxNzUzMjEzMTFIVkZaTDM4RVVQJndpZGdldE5hbWU9c3BfcGhvbmVfc2VhcmNoX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
Which means nothing, it's not a regulated term, or even a generally specific term. "Quick Charge 2.0" for instance is a Qualcomm technology, and something the 6P doesn't support anyway, but that gives you direct info on the capabilities which are 5V/2.4A, 9V/1.5A, 12V/1.2A.
The Amazon page and the ZeroLemon page for the case lists Input but notably not Output amperage specifications.
It also obviously depends what wall plug you have it attached to. If the wall plug only outputs 1.5A then that's the maximum the device will get.
For the Go players out there that need more battery check out this for the 6P https://www.amazon.com/dp/B01DXTIN6W it will also make your phone a brick but hey maybe this could do all day pokemon
I will follow this post since I am looking for a nice power bank for my Nintendo switch too. I have my eyes on this one. https://www.amazon.com/Nintendo-Switch-Portable-Charging-Extended-Rechargeable/dp/B07F7VYRMR .
Eu sunt interesat de power bank-uri care functioneaza ca si case pt el: https://www.amazon.com/Nintendo-Switch-Portable-Charging-Extended-Rechargeable/dp/B07F7VYRMR
M-am zgarcit si am comandat de pe aliexpress si inca nu mi-a ajuns ca sa zic cum e :(
E nasol ca portul usb e jos si n-ai cum sa-l folosesti tabletop si sa incarci
This one!
Yeah, I've seen them. There's no useful reviews yet tough.
This one looks interesting, because it can be charged with QI. That means you can use the same QI charger interchangeably for the iPhone and the battery case.
https://www.amazon.com/Alpatronix-BXX-Rechargeable-Protective-Certified/dp/B075LW155D
Galaxy Note 8 Battery Charger Case, ZeroLemon SlimPower 5500mAh Extended Charging Case Portable Battery Case for Samsung Galaxy Note 8 - Black https://www.amazon.com/dp/B00BYEMNA6/ref=cm_sw_r_cp_apa_zHibAbB77PCSZ
iPhone X Battery Case with Qi Wireless Charging, Alpatronix https://www.amazon.com/dp/B075LW155D/
2300 mAh isn't that big of an improvement over the stock battery (2,100) so I would say you probably shouldn't expect a huge increase in battery life. They do sell them in packs of 2 with an external charger for a good price though. You can keep the extra battery with you if you want to keep it slim. http://www.amazon.com/warranty-ZeroLemon-Extended-Protection-Compatible/dp/B00A533DWO/ref=sr_1_3?ie=UTF8&qid=1396635130&sr=8-3&keywords=zerolemon+galaxy+s3
Thus why Project Ara is becoming so popular, many consumers want to pick and choose their phone's features.
Personally I want a huge battery on the back that can slide into a 1x2 module then extend above the other modules and cover the entire back. That's essentially what my current battery (ZeroLemon 9300mAh) does so I think it's a good idea.
Honestly, that's roughly normal use tbh. I bought the ZeroLemon extended battery and haven't looked back: http://imgur.com/a/UNSE2
I used to faff about with an additional battery and charger plugged into my car all the time so I could swap out the batteries when it gets later in the day, as heading out at about 8-9 meant that if I hadn't charged my phone fully during the day then I was screwed. This extended battery in conjunction with JellyBam (custom ROM) and Greenify has completely changed the way I use my phone now, it feels as though it's had a huge burden taken off it; as a result I go through quite a bit more data, though it's well worth ~£25 delivered.
http://www.amazon.co.uk/warranty-ZeroLemon-Extended-Protection-Compatible/dp/B00A533DWO/ref=sr_1_1?ie=UTF8&qid=1372165577&sr=8-1&keywords=zerolemon
You ever thought about getting an extended battery? It's not the prettiest solution but it will definitely get the job done. and if you don't mind having a bigger phone on hand you could get
The Zero LEmon Battery:
http://www.amazon.com/ZeroLemon-Extended-Protection-Compatible-4897010519648/dp/B01181ODJI/ref=sr_1_1?ie=UTF8&qid=1463755785&sr=8-1&keywords=zero+lemon+Lg+G4
I switch between these 3 every few weeks.
https://www.simplycarbonfiber.com/collections/galaxy-note-9/products/samsung-note-9-forged-carbon-fiber-phone-case-limited-production
https://www.amazon.com/dp/B071NWVT9M/ref=cm_sw_r_cp_apa_i_X4uhDbHVSV7QT
https://www.amazon.com/dp/B07FNC8KNS/ref=cm_sw_r_cp_apa_i_15uhDbMGYXQAD
A quick Amazon search brought up 2 real results. Only one had pretty good reviews
NEWDERY Google Pixel 3A Battery Case, 4700mAh Charging Case Extended Portable Protective with Soft TPU Raised Edge, Rechargeable Charger Case Cover for Google Pixel 3A https://www.amazon.com/dp/B07TLKF43T/ref=cm_sw_r_other_apa_i_ICwDDb6X75RQJ
If you like you can purchase it from Amazon. That way you have the Amazon protection included.
https://www.amazon.com/dp/B072267HNN/ref=cm_sw_r_cp_apa_C47gzb10M5EM9
People have reviewed it and said they had a good experience with the battery case. There's also video reviews online if you like.
https://www.amazon.com/dp/B072267HNN
Get a zerolemon battery, go 2 days between charge.
Best case I found was Armor King. Took the metal back off with hair dryer/ heat gun to loosen the glue for wireless charging. For battery case you have 10,000 Zerolemon or for something smaller is Newdery 5000 with ability to wirelessly charge the case and
phone at the same time.
Links
https://www.armorkingcase.com/collections/r-just/products/armor-king-iron-man-luxury-shockproof-stainless-steel-aluminum-metal-flip-case-cover
https://zerolemon.com/collections/samsung/products/galaxy-note-9-battery-case-10000mah
https://www.amazon.com/Upgraded-Wireless-Charging-Rechargeable-Extended/dp/B07G735FQH/ref=mp_s_a_1_fkmrnull_1_sspa?keywords=newdery+battery+case+Samsung+note+9&qid=1557531891&s=gateway&sr=8-1-fkmrnull-spons&psc=1
This doesn't look to bad for the GS6, lots of good reviews
https://smile.amazon.com/Alpatronix-BX410-Protective-Removable-Rechargeable/dp/B00ZDKWN0M/
Why not just get an extended battery? Or not willing to compromise with the added weight and such?
I have an extended battery for my note 2. Its 6200 mAh. Eventually Iwant to get the 9300 mAh zerolemon battery.
If you don't mind the extra bulk, maybe something like this could help improve that
Sprint Samsung Galaxy Note II
ZeroLemon 9300mAh Extended Battery
Samsung Galaxy Note II is a 'phablet', a phone that is almost in the realm of tablet sizes, with quite a venerable battery already, and with the extended battery I bought, it gives the phone enough battery power to last a full week of moderate-to-heavy usage.
It's as awesome as it is thick.
http://www.amazon.com/warranty-ZeroLemon-Protection-Guarantee-Compatible/dp/B00BYEMNA6
NEWDERY Google Pixel 4 XL Battery Case, Qi Wireless Charging Compatible, 5000mAh Slim Extended Rechargeable External Charger Case Compatible Google Pixel 4 XL https://www.amazon.com/dp/B07YV5Z5YQ/ref=cm_sw_r_other_apa_i_a82WDbPTWSWAZ
Another option besides an external pack is a battery case. Not so great for family since if you have a external battery pack everyone could use vs this being only on your phone but with positive of not needing to have cable dangling or carry a battery pack.
I do believe some battery cases allow you to charge other devices too though. Adds some bulk but doesn't really add much bezel. This uses usb c as well. Great for travel since you can use your phone like normal then minute it gets low turn battery case on.
I have had travel days where i'll have really early morning flight. My phone battery will get low around say afternoon time since i'm using it so much in airport. Turn on battery case and by evening when it's time to go out or have dinner I can take phone out the case with 100% and have enough juice to last til next day. You could also probably survive entire weekend with just the case on. You'll get about charge and a half.
Zero Lemon Galaxy Note 8
This is the one i got, purely because it had good reviews and was the biggest I could find:
LG G4 Battery Case, ZeroLemon LG G4 8500mAh TriCell Extended Battery + Soft TPU Full Edge Protection Case (Compatible with all LG G4 variants) (4897010519648) https://www.amazon.com/dp/B01181ODJI/ref=cm_sw_r_cp_apa_7-Qwyb67383AC
There are however some other alternatives if you don't like the price or bulkiness of the zerolemon;
PowerBear LG G4 Extended Battery [6500mAh] & Back Cover & Protective Case (Up to 2.15X Extra Battery Power) - Black [24 Month Warranty & Screen Protector Included] https://www.amazon.com/dp/B00ZMLOHBA/ref=cm_sw_r_cp_apa_BaRwyb00TWPHF
Kranich Only Fits for LG G4 BL-51YF 8200mAh Extended Battery Replacement with Specialized TPU Protective Cover Case https://www.amazon.com/dp/B01DM6XV2M/ref=cm_sw_r_cp_apa_wbRwybGASC54Y
And another thing, it's not widely stated but the LG G4 supports quickcharge/fastcharge so it's totally worth every penny to scoop up a quickcharger if you don't have one. I like the company Anker as I've been using them for years.
Anker Quick Charge 3.0 39W Dual USB Wall Charger, PowerPort Speed 2 for Galaxy S7 / S6 / Edge / Plus, Note 5 / 4 and PowerIQ for iPhone 7 / 6s / Plus, iPad Pro / Air 2 / mini, LG, Nexus, HTC and More https://www.amazon.com/dp/B01IUSYF8G/ref=cm_sw_r_cp_apa_LdRwyb94QRH6K
There are some other anker quickchargers as well if you only want 1 USB socket or if you want something like 8. And they vary from quickcharge 1.0 to 3.0 which is pretty much just different charge speeds.
Zerolemon is probably the best you can do. http://www.amazon.com/LG-G4-ZeroLemon-Protection-4897010519648/dp/B01181ODJI
This is it
https://www.amazon.com/dp/B07YV5Z5YQ/ref=cm_sw_r_sms_apap_xj7bFlXH88P73
It should handle those games fine, I've a lower end phone (Moto G7 Power) I like to test stuff on and if it can handle them the Pixel 3a certainly can. I haven't heard of any widespread issues with battery life after downloading Android 10, but if you're concerned enough about it there are battery cases available for Pixel 3a.
Pixel 3a will be back on sale for black friday.
And if you really want to go crazy with your Note 2, there's this 9300mAh Battery.
Check this out, I was looking for a new charger and came across this. Looks interesting.
i picked up
iPhone X Battery Case with Qi Wireless Charging, Alpatronix BXX 5.8-inch 4200mAh Slim Rechargeable Extended Protective Portable Backup Charger Case for iPhone X [Apple Certified Chip; iOS 11+] – Black
https://www.amazon.com/gp/product/B075LW155D/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
really nice and snug fit but opening the tab on the top is a real pain in the ass
I think that zero lemon sells an extended battery for the galaxy nexus now, I have one for my galaxy s3 and I can get 14 hours of screen on time and still skip a night of charging.
Edit: here it is http://www.amazon.com/gp/aw/d/B00AZZOH04/ref=redir_mdp_mobile
I'm on my phone so I'm not sure if the link works on desktop.
I'm using this and it's great so far. Lots more battery power and it barely makes the phone any bigger.
Biggest downside is the phone losing it's water resistance. Not to worried about it.
EDIT: In the end I'm really just waiting on Mophie to make S5 Juice Pack because I absolutely loved it on my S3 and I'd prefer to have the option to take the case off.
http://www.amazon.com/gp/aw/d/B00BYEMNA6/ref=mp_s_a_1_2?qid=1377183189&sr=8-2&pi=AC_SX110_SY165
I stand corrected: I just saw this on Amazon: https://smile.amazon.com/gp/product/B075LW155D
(Though I'd read the reviews before I'd buy one...)
I don’t believe there is any officially licensed ones, only the knock offs that you’ll find so your only bet is to look for reviews. According to some reviews online, this seems to be a good one? Personally my battery lasts me from 8am til 2am so I’ve never needed to look for one.
http://www.amazon.com/gp/aw/d/B00AZZOH04/ref=mp_s_a_1_6?qid=1369895473&sr=8-6&pi=SL75
Nexus 6P Battery Case, ZeroLemon Google Huawei Nexus 6P High Capacity 8500mah Rugged Battery Case - Black https://www.amazon.com/dp/B01DXTIN6W/ref=cm_sw_r_cp_apa_rw7Ixb542SFGK
Zerolemon 8,500mah case. Just announced, but already sold out. I was able to snag one though. I had a 10,000mah zerolemon case for my note 4 and never had a problem with it. Hoping this one is just as good.
Oh sorry, thought you were talking about iPhone 7. This one has pretty good reviews though
iPhone X Accessories - iPhone X Battery Case | Slimmest Rechargeable Backup Charging Case for Apple 10 Phone | Best Chargers for Extended Portable Power Pack Cases | 3,000 mAh | 100% Recharge by Zohmo https://www.amazon.com/dp/B0772X4Y57/ref=cm_sw_r_cp_api_tfQYAbD3S97C1
i can get about 3h of screen on out of that (heavy use of reddit + twitter + chrome)
i use CM10.1, leankernel, greenify, etc
waiting to see what the Moto X ends up doing/looking like before i make the jump to either one of the Zero Lemon monsters or pick up a new 3800 mAh Hyperion battery
https://www.amazon.co.uk/gp/product/B07G735FQH/ref=ox_sc_act_title_1?smid=A3LYZBYYDZBWGN&th=1
But what else?
On sale right now.
http://www.amazon.com/gp/product/B00A533DWO/ref=pe_152840_31112430_email_1p_0_ti