... over 16%, high duration for stress. Others : Amorphous solar panel : Charging time is much longer.3. Battery difference ... rechargeable volume indicators will be luminous, and I=25% electricity, I,II=50% electricity ,I,II,III=100% electricity . 2.After ... the solar products area, which including solar charger for mobile phone, solar bag, solar vest, solar power system for laptop, solar torch, solar fan ...