i have a 24v drill battery that wont hold charge for more than

>>1211932
i tested the battery with multimeter and it seems to hold about 16v

take it all apart. assuming it's nicd or nimh cells, a dead cell will show approx 0V after the motor has run down, whereas a healthy one will be around 1.2V. replace the 0V ones, and you should get a few weeks or months of use until one or more old cells decide to kick he bucket. then repeat until you've replaced them all.
total replacement cost will be just shy of the price of a new drill.
it'll be cheaper if you order directly from China, but you never know what you're gonna get.

>>1211932
You'll have to take it apart and check each cell individually with a multimeter.

DESU, just replace all the cells at the same time. Running a battery pack with unbalanced cells makes all the cells burn out faster.

>>1211935
Well then its fucked.
If your not even going to tell us the chemistry then your better off not fucking going anywhere near it. These things are dangerous.

>>1211987
I fully charged it and it was about 25v when I checked it with a multimeter, but after few minutes the battery was dead

>>1211932
>>1212424

Tbh if it's some storebrand drill with no battery packs available, you're probably better off with just getting new one. The battery is probably NiCd/NiMH, and like >>1211969 said it's going to get expensive and old ones will kick the bucket soonish too. Just bin the thing, scrap off some components like motor if you want and invest in a tool you can buy new batteries for(think you can get batteries even for Skil if you look out for them).

>>1212453
What budget drill would you recommend?

>>1211932
Do like me. Buy uo all of the outdated matching tools u can with shit nickle batteries. Get a spot welder and good 18650 cells. Soend some time on youtube and then gut and convert chargers and batteries to lithium.

I seriously spent $100 on a craftsman cordless drill, $150 on a sawzall, $150 on a skill saw and they all had shit nickle batteries. Then i bought 2 more drills, a 1/4" impact driver, another sawzall, a light, another skill saw and some other shit with like 10 batteries and 4 chargers for another $50 all together from auctions and yard sales.

Pretty soon i will have a legit lithium setup with limitless anounts of battery for cheap.

>>1212489
I dunno, the one that isn't above your budget and you can get reasonably well? Ryobi would probably serve you well, altough they can be more expensive in here Europe. Skil, Einhel, Hitachi, even store brands etc might also work depending what you do too, I use personally store brand 16V chordless drill with two batteries for my stuff(paid like 50 euros for the drill and another battery cost me 20 - 30 euros), but I mostly use it to drive screws or drilling wood.