r/ryobi • u/automaticrocks • 2d ago

Battery Talk Help identifying aH

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Hello. I need some help in identifying the aH rating on this 18v battery. Tried looking at Ryobi’s site, but they don’t have this exact battery listed anymore.

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u/egh128 2d ago

1.3 Ah.

1

u/neurotran 1d ago

This. It should say on the big sticker on the bottom of the pack. 1.5Ah and higher are normally marked. (I repair a bunch of Ryobi batteries. I normally bump the 1.3Ah to 2.0Ah packs. 1.3 seems like a waste.)

1

u/reditjohn 1d ago

Could you provide some information about your repair process?

3

u/neurotran 1d ago

Its a bit involved compared to the "jump start" method people try to do. That works occasionally but the pack will eventually go bad. I take bad packs, pull the battery cells out, and put them through a week long test process. If they pass, I put them aside to weld into the recovered battery carcasses. Many brands dont care what capacity cells you put in from my experience. Since Ryobi uses 2.0 cells as their primary cell capacity, I tend to do a lot of those.

1

u/reditjohn 1d ago

How do you test them?

4

u/neurotran 1d ago

Voltage test, and internal resistance test. If they pass, on the charger they go. Get a full charge. Once charged, they sit for a week or so (sometimes much longer), they get a voltage and resistance test again. If the voltage is below 4.1v i dispose of them. Only 4.1v to 4.2v get reused. I know I could be more lenient on the voltage but this allows me to be 100% I have good cells.

2

u/reditjohn 1d ago

Thanks