Reddit reviews Streamlight 85177 CR123A Lithium Batteries, 12-Pack

Did you tell him about cr123a batteries and how they have a ten year shelf life? The problem with lithium batteries is that they self-discharge quite rapidly.

Most 18650 lights can accept 2 cr123a batteries rather than an 18650. Here are some high quality cr123a batteries: http://www.amazon.com/Streamlight-85177-Lithium-Batteries-12-Pack/dp/B000IXCO8K/ref=sr_1_2?s=hardware&ie=UTF8&qid=1463233535&sr=1-2&keywords=18650

The only issue with cr123a batteries is that they cannot be recharged.

LA Police Gear has some and with code LABOR15 its 15% off which is worth it if youre buying other things Like medical equipment or w.e. they have on sale.

Otherwise Amazon might be cheaper with shipping

Streamlight ProTac 2L-X, 500 lumen, takes CR123A batteries, or streamlight's own battery.

Light: here
Battery+Charger: here

Both batteries offer the same 500 lumen lighting but the batteries above^ last 45 mins longer and you don't have to spend $20 on a 12 pack of batteries.

These are the ones I bought. They are identical to the ones the Tilt comes with. Unfortunately there's no good way to turn off the hydrometer so you'll have to replace the battery every 3 to 4 months. There's a writeup on how to do that on their website.

https://www.amazon.com/gp/aw/d/B000IXCO8K/ref=yo_ii_img

I buy batteries from Amazon. 20 bucks for a box of streamlight batteries. http://www.amazon.com/gp/aw/d/B000IXCO8K/ref=mp_s_a_1_1?qid=1450529111&sr=8-1&pi=SY200_QL40&keywords=cr123a+lithium+batteries&dpPl=1&dpID=51Q21OwBzhL&ref=plSrch#

CR123a is a common battery type used in more powerful appliances than AA batteries.

Thanks to this sub I found the Olight i6 Paladin. I bought it like 8 months ago for around $80, but the price has since dropped to $40. I bought it from Amazon.

For those on mobile or something the dets are:

• 420 Lumens for 1 hr
  
• 80 Lumens for 5.8 hours
  
• Cree XM-L LED
  
• Two brightness levels
  
• Water resistant to IPX-8 standard
  
• Mil-Spec MIL-STD-810F
  
  Next is the Streamlight TLR-1 weapon light.
  
  
• 200-300 Lumens at 2.5 hours supposedly, but I think it's more around 1.5
  
• C4 LED, shock resistant, 50,000 hour lifetime
  
• 4.18 oz
  
• Water proof up to 1 meter for 30 minutes by IPX7 standards
  
• The model I have has a strobe function. Also has a always on, or hold switch for on mode.
  
• You can find it for $110ish, the old price was closer to $200.
  
  Then the light I regret buying but didn't care to return--the TLR-3. I bought the TLR-3 only to realize the TLR-1 was significantly better and decently priced.
  
  
• 100 Lumens for 1.5 hours
  
• Momentary/steady on/off switch.
  
• You can find it for around $70
  
  
  The TLR is the "poor mans" weapon light, if you have money you should look into Surefire.
  
  Before I bought the weapon lights, I thought the "arm" on the back of the light that extends past the trigger guard was part of the mount system, but it's actually the switch. Just a now you know type thing.
  
  All three lights in this post can use the same batteries. I bought them on Amazon

If you're looking to use batteries and want higher power, you might think about using 2x CR123A cells in series. That would give you 6 volts, which wouldn't be too much waste for the regulator.

These are non-rechargeable, which is good. If you run rechargeable batteries without the proper protection circuitry to prevent over-discharge (letting the battery voltage get too low), bad things can happen.

Or you could look into an Arduino variant with a built in JST plug that's designed for use with a lithium rechargeable battery, like the Adafruit Flora or Gemma, or the newly released MKR1000

The internet is your friend. Physical stores charge out the ass for them, but you can get them online for relatively cheap.
12 pack for $18.66

1. ManBug G10
   
   
2. Pocket suspension clip, with built-in tools
   
   
3. More batteries!
   
   +
   
   --------------
   
   = $103.03
   
   

A lot of the lights run on higher voltage (3v) lithium batteries such as the CR 123A batteries

With my Tilts, I calibrate in vapor distilled water using a Thermapen. Having a job with giant test labs have it's benefits.

I calibrate those bastards EACH and every brew. They know what 0.000 is.

I then re-calibrate them in the wort with the specific gravity reading from my hydrometer and refractometer. The tilts NEVER agree until you tell them, 'hey stupid, this shit is 1.065 not 1.055'. That being said, the gunk during fermentation is going to screw with the numbers. I never trust the reading other than stable. 60% attention for 6 days, that beer is done. I'll take a real reading when I package.

I used them a lot more before to get a hang of my normal 12.5° - 17° P (1.050 - 1.070) turn around times using a handful of different yeasts. They were awesome for that data. I have a table now of stuff that can turn around in 5 days, 7 days, 10 days, and 14 days.

I use them more now in ciders and meads in the documenting of a fast process. Helps with degas, nutrient additions, and temperature control (all key when wanting to try 14 and 21 day cider and 21 and 28 day mead.

As for rechargeable batteries. That is most likely a pipe dream. They rely on the weight/density of the battery as part of the system. CR123a are expensive, replacing them isn't difficult or stressful.

TL/DR: Tilts are cool, don't trust them on attenuation, rechargeable batteries not an option for time being.