Product Overview WEESUN HP6‑4.0 6V 4AH is a valve‑regulated sealed lead‑acid battery with zero daily electrolyte maintenance. Built‑in safety features resist high temperature; disassembly or incineration is forbidden to avoid fire & explosion hazards. It delivers steady output current and low self‑discharge rate, retaining residual capacity after long‑term storage. Common applications include security alarm panels, kids electric ride‑ons, compact UPS, simple medical devices