Classic Battery Adapter

[rprosperi]

(01-22-2016 04:29 AM)Katie Wasserman Wrote:  Totally safe. I used to do it regularly in all my HP calculators before I switched to primary lithium cells -- so that I would not have to recharge them at all. (Of course many NiMh cells today have very good self-discharge characteristics.)

Many here will advise against charging cells inside a Spice or Woodstock because your calculator might not have good battery contact, then turning them on while charging would expose the circuit to higher voltage, pulsating DC current. Just don't turn them on while charging and you'll be fine.

Thanks Katie and Sadsilence, for confirming my suspicions. For both Woodstock and Spice machines, I use external chargers due to the risk, but have always thought the Classic machines were more robust.

I've given much thought about giving up on rechargeables totally and getting a bunch of Lithium cells, but haven't made the leap yet. At some point, convenience will indeed win out over old-school use-it-like-it-was technology appreciation, but just not quite there yet.