This Core SWX 14.8V Lithium-Ion NP-1 Style Battery Pack offers modern lithium-ion chemistry inside the venerable NP-1 form factor. It has a 98Wh capacity for long runtimes of 3.9 hours with a draw of 25W. Easy to use, you can power compatible accessories from its D-Tap port. The D-Tap port is also used to charge the battery using a Core SWX D-Tap charger. Pressing the Check button lights up the 4-LED capacity meter for a real-time view of the battery’s capacity. Internal circuit protection will minimize the chances of overcharging.