Epson HX-20 - Manual (Page 13)

plugs identical to the one on the HX-20 battery charger.)
Using any battery charger other than the one that came with your
HX-20 may damage the HX-20 and/ or its batteries and could void
your warranty.
HX-20 HX-20
If you operate the HX-20 with the battery charger connected, even-
tually you will overcharge the batteries.
HX-20
When its batteries need to be recharged, the HX-20 will flash
“CHARGE BATTERY” on the screen sixty times, and then shut
off. When you see the “CHARGE BATTERY” warning, turn off
the power switch and charge the HX-20 for eight hours. If you
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