Sharp MT77/MT877 Charger cradle - does it drain the battery before charging?

[wlexxx]

Sharp MT77/MT877 Charger cradle - does it drain the battery before charging?

i ask because i am having issues with capacity.

sometimes when i record, the battery can be just off a 'full charge' cycle,

and the fuel gauge will read 'full', but

within 10 minutes of starting to record, it;s 'battery empty'.

if the charger really discharges before charging, that means i can;t try

to get more into the cell by charging twice. i would actually be doing

a bad thing, wearing the cell out with an extra cycle.

it;s a new cell.

does anyone have a manual for this thing?

wle.