36 Volt NiMH/NiCd Battery Pack (1.8 Ah) Smart Charger

now I thought while we're on the topic we may as well do some basic battery charger theory so here we go now the first technique is a very basic one for charging these things nickel metal hydrides and Nike ads are typically charged with a constant current you can actually pulse the current as well but it's but it's typically a constant current source and what you can do the first technique is a timer based system so you just put the battery in and the microcontroller and they're just times how long it's been in their charging and then shuts it off and this is really totally inadequate except for the lowest charge currents because you don't know the state of this you don't know how much charge is already in this battery before you put it in the charger now the two major types of reach are tools as I said are NiCad and nickel metal hydride and I've drawn a charge charging graph here this