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Recommanded NiMh battery cells for HP82162A
09-25-2017, 10:48 AM
Post: #20
RE: Recommanded NiMh battery cells for HP82162A
(09-25-2017 09:50 AM)Sadsilence Wrote:  Looking at HP82120A curcuit actual charging current Ic depends on voltage of cells.
Formula is ( 12V - 0.7V - battery voltage )/ 365 Ohm.

Empty pack @ 4*1V = 4V -> Ic = 12V - 0.7V - 4V / 365 Ohm = 20 mA
Loaded pack @ 4*1.4V = 5.6V -> Ic = 12V - 0.7V - 5.6V / 365 = 15.6 mA

That perfectly matches 17 mA standard charge current of mentioned 170 mAh 1/3 AAA cells.

Where do you get your 12V and your other figures? The charger is supposed to be delivering 8VAC (at least that’s what written on it). Although mine does deliver 12VAC!

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Tall-Key HP41CL, CV, CX, 82162A Printer, 82143A Printer, 82160A HP-IL, 2 Card-Readers, Modules, Wand, HP50g.
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RE: Recommanded NiMh battery cells for HP82162A - Neve - 09-25-2017 10:48 AM



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