Pentax D-LI8 D-L18 K-BC8U Equivalent Digital Ca...

It charges Pentax Optio A10, A20, A30, A36, A40, L20, S, S4, S4i, S5, S5i, S5n, S5z, S6, S7, SV, ... Buy it:
$19.00 at eBuyBatteries.com
Pentax 39153 K-BC8U Battery Charger Kit

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Pentax D-LI8,D-L18 Battery Charger

Pentax Optio,Optio X Optio WP Optio WPi Pentax Optio S,Optio S,Optio S4,Optio S4i,Optio S5n,Optio... Buy it:
$10.88 at DC-Battery US