As far as I can tell there are no limits. It recognizes battery type and size and setws the appropriate charge parameters automatically.
This charger runs on 12 volts DC, like a car battery, which is great for recharging at the field. I can also run it on a salvage computer power supply that I bought at a thrift store for a few bucks.
Thanks , what power cord do i need to buy for this charger , as it does not come with one ?