Aqua Shock - Lithium Batteries

Lead-acid batteries are no longer offered due to the increasing popularity  of lithium packs.  The new lithium batteries are half the weight and last 30% longer due to increased capacity.  In conjunction with the 5 lb reduction in the AS2 and AP1, that adds up to 10 total pounds of weight off your back!    Being offered as a standard with all backpacks has reduced your total cost, compared to upgrading to lithium packs as before.