Our Company made a new solar operated knapsack pump. It had anonymous advantage over the knapsack pump are available in the market and some details are as follows*It has a?br/Washable filter?br/Head light for night time operation.?br/Approximately total 10 to 14 hours approx. daily working capacity.?br/No need of external charging.?br/16 litre capacitybr/My product detail is as follows?br/ *12 V 7Ah Batterybr/ *12V DC Motor (Auto Cut-Off)br/ *10W/15W Solar penalbr/ *16 lit. tankbr