On Wednesday, 23 January 2019 15:30:05 UTC, Adam Funk wrote:
I have a Bosch (blue) GSR12-2 cordless drill that I bought with a
mains SDS drill on sale from Screwfix in 2009. (IIRC, someone here
pointed the sale out to me. Thanks, whoever!)

The drills are still in good working order, but one of the two
batteries that came with the cordless one is dead. Specifically, if I
put it in the charger, the light blinks for a while (charging) then
indicates "charged", but when I put it in the drill, absolutely
nothing happens. The other battery is still working, but it doesn't
last as long as it used to, & I have to be careful not to run low in
the middle of a job.

I googled the battery number, 2607335709, & it appears to be extinct,
but you can buy "compatible" ones for £25 & up. I'm interested in
opinions on whether replacing one or both batteries is worthwhile.

Thanks.

I very recently bought a Battery type BOSCH 2607335244, High capacity, 12.0V, 3000mAh, NiMH. My old Bosch drill has always been so solid and smooth. I've now got a cheap but effective impact driver, a decent SDS, but preferred the Bosch for everyday drill use. The downside being that it is heavier than so many modern drills. Plus, it is a much appreciated present that I couldn't throw away even if it were a doorstop.

Bought from AboutBatteries FR. Fast delivery. Couldn't find one cheaper at the time from what appeared an acceptable supplier.