I managed to get hold of 2 Lawnmower batteries, each with 10s 2p cells producing 21v odd.
I soldered them in series to get 42V, the cells are very good quality, although I can't find the brand and see no reason to take them apart when they are so well made.
My problem is my drill found the 41V a bit too much so I am going to get a step down device.
My question is How many amps is the 42v pack using?
I can't take the cells apart and there is nothing on them anyway as far as I can see, I imagine they are 2200 or maybe 2400 per cell, but I have no means to test that.
I tried putting a meter I got from eBay which was supposed to measure up to 60v but it cooked it!
I probably did not get the wiring right, problem with drill projects is the same connectors feed the load as well as the charge, so I plan to put a DC connector in which will work with my new 42v charger.
I got a great meter for showing battery capacity, but it only measure voltage and bars of energy left
https://www.ebay.co.uk/itm/263654026311
I am struggling to find step down that does the right voltage and fits in the space I have available.
I know I could just exclude a pair of cells but it is all soldered in so nicely including nice terminals.
I would appreciate some guidance on Amps and if you know a small device that would be helpful.
I soldered them in series to get 42V, the cells are very good quality, although I can't find the brand and see no reason to take them apart when they are so well made.
My problem is my drill found the 41V a bit too much so I am going to get a step down device.
My question is How many amps is the 42v pack using?
I can't take the cells apart and there is nothing on them anyway as far as I can see, I imagine they are 2200 or maybe 2400 per cell, but I have no means to test that.
I tried putting a meter I got from eBay which was supposed to measure up to 60v but it cooked it!
I probably did not get the wiring right, problem with drill projects is the same connectors feed the load as well as the charge, so I plan to put a DC connector in which will work with my new 42v charger.
I got a great meter for showing battery capacity, but it only measure voltage and bars of energy left
https://www.ebay.co.uk/itm/263654026311
I am struggling to find step down that does the right voltage and fits in the space I have available.
I know I could just exclude a pair of cells but it is all soldered in so nicely including nice terminals.
I would appreciate some guidance on Amps and if you know a small device that would be helpful.