How long do nickel metal hydride batteries last exactly?

Joined
May 7, 2004
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3,656
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RLG, Fly heading 053, intercept 315 DVV
#1
I've been using the same NiMH batteries in my atomic clock since circa 2004 and yet to this day they still charge up and work for at least 6 months until I have to recharge them again. They are the 2200 MAh versions. I guess I could use lithium batteries since the clock is a slow drain device, but since I've had such good luck with these why bother, right?

You'd think after some 15 years now they just wouldn't charge or even hold a charge.
 

KB4MSZ

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Premium Subscriber
Joined
Mar 12, 2018
Messages
184
Location
Tampa, Florida
#2
If you have been using the same NiMH batteries for 15 years you have exceeded any guess I would have given you. I used to use them in my R/C controllers for helicopters and they remained reliable for about 2 years. I decided that trusting a helicopter model to a controller using NiMH wasn't the best idea so I switched to LiFePo4 batteries. Of course, your clock isn't going to crash to the ground when the batteries die.
 
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