BoreCharger increases water production capacity or yield of an existing borewell by at least 20-40% with a very low investment. Its unique technology helps harvesting rainwater from the topmost, seasonally replenishable unconfined aquifers. BoreCharger makes the borewell highly sustainable by recharging the deeper confined aquifers. We make this possible by a unique patented process which "perforates" existing borewell casing from inside. This process potentially revives existing, failed and low yielding borewells. Setting up this borewell recharge system is extremely easy as it doesn't require any civil construction, space and most importantly a surface water source.