Well i can't really help much as i have only a 90min Sanyo charger. But its a good charger, 90mins means 90mins full charge. Ok almost full cos i dunno really full or not. :bsmilie:
My batt experience, after charging the batts, 2 weeks later. The ability to hold charge:
Sony Stamina 2100s. (Blue ones) - Approx 95% full
Konnoc 2500s - Approx 80% full
Sanyo 2300s - Approx 70% full
Maha Powerex 2200s - Approx 50% full.
Some batts like the Powerex discharges quite fast, while my Sony's can hold charge at 80% for at least a month. It will take about 3 months and more for the Sony to completely discharge itself.