A 6ah battery is $219! Anyone tried the aftermarket ones? Need one for a mower

I have never had any luck with after market batteries, they either swell up when charging or don't hold a charge after a while, most are cheap china made crap.

Can you rebuild the old one, assuming you have an old one? Plenty of instructional videos on youtube.

I wouldn't trust one. I've had great life out of mine so far.

As long as it isn't a problem in the actual charge control circuitry.

I bought a knockoff 4ha one for my chainsaw for $49.00 on Amazon and it's a good one.

How old is the battery ? I had one go bad and took it to Home Depot and they gave me a new one .

I bought an 18 volt 9ah aftermarket battery for my buffer and sawzall. I have never run it below 3/4 charge and I buffed my whole 22' Champ Bay. I thought I needed a different charge so I also bought a charger with it. The charger didn't work initially and I got a refund. They told me to just keep it. Looking at the charger it looked like the contact that monitors the battery was in the wrong position. I took it apart, moved the contact, and in 5 minutes had a free working charger. Last weekend I spent 30 minutes with the sawzall cutting some cedar limbs and battery barely lost a charge.

My sons father in law had a brand new Ryobi self propelled 20” mower that he never used. Got it in a big tool bundle. He uses a rider and this thing just sits. He gave the mower to my son w/o a battery. I am getting him a battery for a Christmas gift and got sticker shock at the price from HD. You guys who had good luck with aftermarket, what brand did you get? There are dozens. I am leaning toward genuine Ryobi though. 3 year warranty. China stuff is 30 days and Ryobi off Amazon or E-Bay…no warranty from Ryobi.

I bought one off Amazon, works about half way then needs charging, junk is what I got, but got what I paid for

I bought Vanon 18V and have never had a problem in over 4 years

I have had some 12 volt Ryobi cheep china batteries for 4 years that are better than the original ones. I think those batteries are hit or miss

Batteries + might be able to rebuild the bad one cheaper than buying new. Otherwise, HD sometimes has a 2 for 1 Ryobi battery deal.

There might be a ton of them on Craigslist after Christmas...

Same here but had it 6 months. It has a charge indicator on it and never seen it below 3/4. I thought I needed the 9ah for buffer but a 6 would have worked fine.