The Tenergy 4 PCS D size 10000mAh High Capacity NiMH Rechargeable Batteries Flat Top are reliable and powerful batteries designed for various electronic devices. With a voltage of 1.2V and a high capacity NiMH chemical composition, these batteries are suitable for both high drain and low drain devices. Originating from China, this pack of 4 batteries provides long-lasting power for your consumer electronics. Ideal for use in a wide range of applications, these rechargeable batteries offer convenience and sustainability.