NiKon BP-D60 Replacement Battery 7.4V 2200mAh Li-ion

NiKon D40 / D40X / D60 / D5000 — 7.4V Li-ion Replacement Battery (BP-D60)

This is a 7.4V, 2200mAh Li-ion replacement for the NiKon BP-D60 battery. It fits the D40, D40X, D60, and D5000 — all compact DSLRs that share the same battery form factor and voltage rail. Capacity figures come from the product specification, not third-party estimates.

• D40 / D40X / D60 / D5000 compatibility: These four bodies use the same EN-EL9 slot geometry and 7.4V input rail. The BMS handshake on each model checks cell voltage and chemistry — this battery passes that check on all four bodies without triggering an incompatible battery warning.
• Bench tested on actual hardware: We ran this battery in a D60 body and confirmed the BMS negotiated correctly at power-on, the charge indicator read accurately across the full discharge curve, and no mid-session cutoff occurred under continuous burst shooting.
• Grip slot pairing on the D40 and D40X: When using a battery grip with two slots, insert both batteries at matching charge levels. The grip draws from the lower-charge cell first — a large mismatch between slots causes one battery to deplete well before the other, reducing total available capacity across the session.

Why the D40 grip shows "incompatible battery" on one slot but not the other

Battery grips for the D40 series authenticate each slot independently — the camera's BMS sends a handshake signal to each cell separately, not to both at once. If one slot returns an incompatible flag while the other reads normally, the issue is almost always contact resistance at the slot with the fault. Clean the battery terminals on both the grip and the battery with a dry cloth, reseat firmly, and power on again. If the flag clears on swap, the original slot's contacts need a light clean with isopropyl alcohol on a cotton swab.

Grip vertical shutter not responding after battery swap

The vertical shutter release on D40-series grips requires both battery slots to be occupied and both cells to be above the grip's minimum voltage threshold — typically around 6.8V under load. A single battery in one slot, or one cell sitting too low, causes the grip's vertical controls to go unresponsive even if the camera body fires normally through the top shutter. Insert a charged battery into the second slot and check that neither cell reads below 7.0V at rest before shooting. If the vertical shutter still does not respond, remove both batteries, reinsert them simultaneously, and power cycle the body.