Rechargable Batteries

talvare

talvare

Ted A
H-M Supporter Gold Member
Joined
Apr 4, 2016
Messages
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Just wanted to ask a question of the brain trust here. I'm wanting to find a source for good quality AA size re-chargeable batteries. I use these to maintain the memory in my Bridgeport EZ Trak mill. When I purchased the mill the permanently installed battery on the mother board was dead and it was quite a process to bring it back to life. So, I installed two battery packs in parallel that I rotate every six months with re-charged batteries. I've just been using the typical Eveready or Duracell rechargeable batteries, but the life expectancy only seems to be two to three years. I have seen things like electric shavers that the rechargeable batteries last for decades. Where do I buy batteries like that ?

Thanks for any assistance.

Ted
 
I have found that nickel metal hydride AAs work very well and hold their charge for months. I bought several packs with AGFA brand from Amazon and they were a great buy. Panasonic and others make them also. I use them in my camera. They do self-discharge but more slowly than nickel-cadmium
 
Panasonic Eneloop rechargeable batteries, I have some that are probably 8 years old and still going strong. They have minimal charge loss over time, I have used others but they do not last or hold charge as long. Also, if you need a full 1.5V vs. 1.25V of rechargable, there are newer lithium batteries with a built in voltage regulator that give you full voltage. They do require a different charger. Also the mA ratings for many batteries is deceiving, many do not deliver anywhere near what they claom or degrade fast.
 
There's good data on long-term rechargeable Li-ion batteries, BUT the "AA" compatibility is nil;
those AA batteries are carbon/zinc or NiCd or NiMH types, and 1.2 to 1,5V each, while the
lithium types are 3 to 4V.
For what it's worth, a trio of AAA in series is replaceable with a single Li battery of the non-rechargeable
kind.

One sees rechargeable Li-ion cells that look and act like AA's (search on TEMU for 'lithium AA recharge")
but that's new to the market, not sure I'd want to trust 'em. They have a higher voltage battery inside, and some
kind of regulator, and don't recharge from their output terminals, need a USB-type cable for that.
 
2 to 3 years and using rechargeable?

Current batteries are much better.

The energizer batteries claim 12 year shelf life and decent capacity.

At Sam's club they have those and their brand on same shelf, exact same packaging with different colors, lot less cost.

We used the Lithium blended batteries, they work better, but a bit pricey.

Rechargeable batteries usually have less capacity than not chargeable, if you are getting 3 years between charges, then get the 24 pack at Sam's, toss them in the fridge and just toss them every so many years, or pull from device and use in remotes or other things.

Sent from my SM-G781V using Tapatalk
 
Many thanks to everyone for the replies. One thing I should have stated is that the original battery on the mother board was 3.6V, so that's one reason I chose to use the battery packs with three 1.2V rechargeables. I have purchased many non-rechargeable batteries from Sams and Costco and have been very disappointed with their claimed shelf life and have had numerous problems with them leaking and ruining various devices. I will certainly look into and likely purchase some of the Panasonic batteries recommended.

Thanks again for all of the feedback.

Ted
 
mmcmdl said:
LMAO ! :grin: I was watching to see where this would go . :grin: We know who has the sense of humor and dirty minds .
Click to expand...
Machinists! It's all that boring and reaming.

I just stocked up on Eneloops after using Energizer Recharge for a surprisingly long time. The AA batts give reasonably good service, I've not been impressed with the AAA of either brand.
 
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