Only one portable Red Lantern Battery has been seen to date, Atrocitus' personal Power Battery seen in "Reckoning" and stolen by Razer. All other Red Lanterns use the Red Lantern Central Power Battery to recharge their Red Lantern Power Rings. Atrocitus used his portable Battery to charge the machinery interrogating Razer in "Reckoning", indicating that the red energy either caused Razer pain or drained life from him.