Reddit reviews Tenergy 10000mAh NiMH D Battery, Rechargeable High Capacity D Size Battery, High Drain D Cell Batteries for Flashlight, 8-Pack - UL Certified
We found 7 Reddit comments about Tenergy 10000mAh NiMH D Battery, Rechargeable High Capacity D Size Battery, High Drain D Cell Batteries for Flashlight, 8-Pack - UL Certified. Here are the top ones, ranked by their Reddit score.
REPLACE STANDARD BATTERIES - Exact replacement for the everyday standard D battery. Replace your D sized disposable alkaline batteries with our rechargeable 1.2V D cell battery. Dimensions: 61.5mm (length) x 33mm (diameter), standard D size battery.MONEY SAVING & ECO FRIENDLY - Being one of the most cost-effective batteries, Tenergy D cell rechargeable batteries can be recharged up to 1000 times and between 1-10 charges will have paid for themselves. You are also diminishing the carbon footprint by limiting the waste caused by disposable batteries. Switch over. Save. Reuse. Recharge with Tenergy.EVERYDAY USE - Our ideal Tenergy D cell rechargeable batteries is perfect for high/low draining electronic items. Use it in all your household devices such as flashlights, camping gear, clocks, radios, portable electronics, and much more. This is the perfect D size battery for cameras.PERFORMANCE LASTING - At a battery capacity of 10,000 mAh, the Tenergy rechargeable D cell battery keeps your devices running longer so that it doesn’t fail you when you need it most.NO MEMORY EFFECT - With no memory effect on our rechargeable D battery, charge your batteries anytime. Even when they are close to full or partially drained you won't have to worry about long term memory effects and will still get the full capacity each use.
Road pro d cell powered fan https://www.amazon.com/RoadPro-RP8000-Indoor-Outdoor-Power/dp/B00KJGRLJI/ref=sr_1_1?ie=UTF8&qid=1526014405&sr=8-1&keywords=roadpro+fan
powered with a couple sets of these D Cells https://www.amazon.com/Tenergy-10000mAh-Rechargeable-Batteries-Flashlight/dp/B001AYIRH8/ref=sr_1_sc_1_a_it?ie=UTF8&qid=1526014459&sr=8-1-spell&keywords=ternergy+d+cells
Charge them with this charger
https://www.amazon.com/Tenergy-T-1199B-Universal-Battery-Charger/dp/B0019273U8/ref=pd_bxgy_121_img_2?_encoding=UTF8&pd_rd_i=B0019273U8&pd_rd_r=6AKQTFQM053GGVEPMPC4&pd_rd_w=f0PUk&pd_rd_wg=S4GRX&psc=1&refRID=6AKQTFQM053GGVEPMPC4&dpID=41pRtqenYEL&preST=_SX300_QL70_&dpSrc=detail
Charge up at the local libraries
that setup should power the fan for a few days on high per set of batteries.
I thought it was odd that he was harping on how many mAh the "bad" D battery held and that it was the same as a AA but he never did say how many mAh a D size is supposed to have.
Some googling found these:
Rechargable D size @ 12,000 mAh, 2 for $23.
http://www.amazon.com/CTA-Digital-12000-Rechargeable-Battery/dp/B001647WKU/ref=pd_sbs_hpc_1
8 pack for $50 @ 10,000 mAh:
http://www.amazon.com/Tenergy-Size-capacity-Rechargeable-batteries/dp/B001AYIRH8/ref=pd_sbs_hpc_3
Yes, what you're describing is very possible; it is called a battery/power management system. However, using D-cell batteries is probably not a great option here.
I'm using you're using these batteries.. These are more geared towards consumer user than with easy integration into a DIY project.
Is there a reason you chose a 12V/3A supply?
Adafruit has some easy components/solutions you could look into.
See:
Lithium Ion Battery Pack - 3.7V 6600mAh
https://www.adafruit.com/product/259
They look similar because this iPod enabled boombox is actually a modern remake of the Lasonic TRC-931 Cassette Boombox. While they look very similar the original is said to have much better bass response.. I've owned one of the newer models that are made for iPods and despite its shortcomings compared to the older cassette tape version I'd say it's a well worth the money if a boom box is something you're interested in.
However I would recommend purchasing some rechargeable D batteries and a charger if you want to fully utilize the boombox greatness.
I bought these bad boys and a charger
Too bad they don't make rechargeable D cells anymore.
Edit: Okay, I was wrong.
it is probably a proprietary case, but if you take it apart it is made of individual cells that you can replace the cells, from the size they may be D size, or sub C... something like this might work.