Restoring a Bosch SR 7.2 Flexicharge screwdriver and converting batteries to Li-Ion.

I bought this non working Bosch 7.2v Drill/Driver from Ebay. It looked in good condition and used two independent 3.6v NiCd batteries which were dead and leaking. I want to convert it to 2 x 3.6v Li-Ion battery power.

[@TheEmbeddedHobbyist]

the two speed option could cause a problem with one battery becoming flat before the other and reverse charging it.
Nice repair.

[@DaftOldMan]

Yes the two different voltages seem an odd way to get two speeds. I guess the original NiCad batteries would not have cared about a bit of reverse charge. I don't suppose the Li-Ion cells will like it at all.😁

[@dennisallan3004]

Where's the voice over gone ?
Nice job.

[@DaftOldMan]

No idea. I must have been having a bad day.😁

[@volkansezer2132]

why didn't you use BMS? Using Li-Ion batteries without BMS is dangerous, isn't it?

[@DaftOldMan]

The BMS is in the charger which is the next video. I do not use BMS for power output as I find they are not very good at managing high power output. I use BMS to charge the battery.

[@jaswats9645]

Lol. But why.

[@DaftOldMan]

Because I can. 😁