HQRP 2-Pack Gumstick Battery Compatible with Sony NC-5WM, NC-6WM, WM-701C, 1-528-231-11, WM-RX707, WM-F100, WM-FX675

This was a replacement battery for my Sony portable disc recorder. I charged correctly and is functioning as it should.

I got these to use in a Sony wm-ex633 Walkman. These batteries should work for all of the EX series cassette Walkmen and it did in mine.Finding an original charger or one made for gum stick batteries is hard and expensive but you can just use any universal charger that has an adjustable negative pole and takes up to C or D batteries. I got the one that was frequently bought together with these batteries that Amazon recommended.The thing about the new old stock or used gum stick batteries you can find used is that they’re known not to hold a charge long at all. These may be cheap quality in some people’s eyes but they’re definitely reliable and one of the only sources of these batteries still made today so I’m glad to be able to find these.And like I said, no need to buy a special charger for these. A universal charger that can charge NiMh batteries and is long enough to fit these will do the trick even if they claim to only support cylindrical batteries.

like the title says, the batteries work (in my case for a minidisc player) but they just don't last very long at all.

Excellent batteries for my little Sony Walkman recorder / radio

Didn't work. Tried to charge it using a CD player connected to a wall plug and a dedicated charger.

For old Walkman and wasn’t sure it would work. Fit perfectly and now works. I’m so happy.

These are definitely the best gum stick battery available on Amazon. Worked great in my vintage sony walkman. I have found that the best ones I've used are from/made in Australia available on ebay.

These do not hold a charge at all. Not recommended.