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 followsbr/It has a br/Washable filter br/Head light for night time operation. br/Approximately 8 to 10 hours working capacity at day time &8 to10hour at night time. total 16 to 20 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 Submersible Motorbr/ *10W Solar penalbr/ *16 lit. tankbr/ *12 V LED Head lightbr