Battery Charging Currents of Assorted HP-Calcs & Peripherals

[rprosperi]

(02-13-2016 12:28 AM)Dave Frederickson Wrote:  

(02-11-2016 11:18 PM)rprosperi Wrote:  Do you have a Topcat Reserve Power Pack (82037A)? I'd be curious what the current is from there?

I measured mine at 450 mA.

Wow! I found mine today and will try it tomorrow. Not sure I have a dead Topcat battery pack, but I suppose the current shouldn't change that much until the end of the charge.

Not being a EE type guy, I have a dumb question. I'm sure the current is only valid if I test with the battery actually connected, so how do you physically measure it? Run some lead wires from the cradle terminals outside the case, then drop the battery onto the terminals/leads, and use a DMM to test the ends of the leads?