Kastar EN-EL9 2000mAh 7.4V Lithium-Ion Camera Battery

Replacement battery for Nikon EN-EL9 series

The Kastar EN-EL9 is a 2000mAh 7.4V lithium-ion rechargeable battery built to replace the Nikon EN-EL9, EN-EL9a and EN-EL9e packs. It suits photographers using a Nikon D40, D40X, D60, D3000 or D5000 who need a spare or replacement cell. An integrated microchip guards against overcharging and helps extend the overall service life of the pack.

Check camera model and charger compatibility

Before ordering, confirm that your camera body is one of the five listed Nikon models and that your existing charger accepts the EN-EL9 form factor. The pack measures 2.2 L x 0.56 W x 1.42 H inches and weighs .12 pounds, so verify the battery compartment can accommodate those dimensions. The unit ships as a single battery without a charger, so ensure you already own a compatible MH-23 or equivalent charging device.

Steady output during long shooting sessions

Rated at 14.8 watt-hours with two internal cells, the battery delivers a stable 7.4V supply that supports extended shooting rather than only brief bursts. The lithium-ion chemistry maintains consistent voltage through most of the discharge curve, reducing the risk of sudden power loss during continuous use. The protection circuit also limits current spikes, helping the pack run cooler under sustained load.