http://www.panasonic-battery-charger.co.uk/Battery-Charger/Panasonic/Panasonic-PV-GS250.html
1. The Panasonic PV-GS250 mini charger comes with a separate car cable and no AC adapter. It is very convenient, making travel and daily use easy.
2. Dual charging modes - Rapid Charging mode charges the battery to 90% full, then the charging circuit switches to a low current top-off charging mode to safely complete the charge.
3. An LED indicator shows the battery charging status.
4. The battery charger is equipped with automatic constant current control, which protects the battery from overcharging, short circuits, and electric shocks.