Hi. I'm investigating the idea of using a laptop battery for energy storage in a portable solar setup. The idea is charging the battery from solar panels, then power/charge other devices from the battery in low light conditions. I would like to be able to power/charge laptops and usb-devices. The macbook pro 13" battery is tempting... (60wh, 11v, li-ion) datasheets on these batteries seem impossible to find... Is using laptop batteries in this fashion a feasible option? Has this been done before? I can't seem to google anything on it... Are there better alternatives simplicity/capacity/weight?