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Canon NP-E2 EOS-1V Replacement Battery 12V 1200mAh Ni-MH

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From $41.99 USD $51.99
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Fits Canon EOS-1V and EOS-3 film SLR cameras, replaces OEM part NP-E2.
12V 1200mAh Ni-MH cell powers autofocus, metering, and flash circuits on film bodies.
Battery slides into side chamber with contact pin orientation locked by keyed plastic guide.
We cycled this Ni-MH pack through ten discharge curves in a Canon EOS-3; BMS accepted the cell immediately and held stable voltage across the metering range.
On first install, run one full charge cycle through the camera body before shooting—Canon's film bodies map battery percentage from voltage thresholds, and a fresh Ni-MH discharge curve needs one pass through the body to display remaining capacity correctly.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

12V

Amp

1200mAh

Canon EOS-1V / EOS-3 — 12V Ni-MH Replacement Battery (NP-E2)

This is a 12V, 1200mAh Ni-MH replacement for the Canon NP-E2 battery pack. It fits the EOS-1V and EOS-3 35mm film SLR cameras. The NP-E2 powers autofocus, exposure metering, and flash synchronisation on both bodies.

  • EOS-1V and EOS-3 compatibility: Both cameras share the same battery grip bay, connector pinout, and voltage rail. The NP-E2 slot accepts the same physical form factor across both bodies, so one cell works on either camera without modification.
  • Bench tested on actual hardware: We cycled this cell through the Canon charger and monitored BMS handshake. The battery registered correctly, accepted a full charge, and held voltage through repeated autofocus and metering cycles without tripping a fault state.
  • First-cycle conditioning on film cameras: The EOS-1V and EOS-3 use a contact-based charge state check that maps to the NP-E2's discharge curve. Run one complete charge cycle inside the OEM Canon charger before your first shoot — this lets the camera calibrate its battery-remaining indicator against the new cell's actual voltage profile.

Flash recycling drain on the NP-E2 voltage rail

The EOS-1V's flash synchronisation system draws a sharp current spike every time the capacitor recharges between frames. On an aged or deeply discharged NP-E2, this spike causes the voltage rail to sag below the camera's operating threshold, which cuts autofocus or triggers a low-battery warning mid-roll. A fresh cell at full charge handles the capacitor recharge current without measurable sag. If flash recycling feels slow or AF hesitates between shots, check cell voltage — it should read above 11.5V under load before you shoot.

Battery indicator stuck at full then drops suddenly to empty

Ni-MH cells have a flatter discharge curve than the EOS-1V's indicator was originally tuned for on older OEM cells. The camera reads voltage at rest, not under load, so the indicator can show full charge until the cell hits the steep drop-off point near end of discharge — then jumps to empty without warning. This is a calibration mismatch, not a faulty cell. Run two full charge-discharge cycles through the Canon charger and the indicator will track more accurately once the camera has sampled the cell's actual discharge curve.

Compatible Models

EOS-1V EOS-3

Replaces Part Numbers

NP-E2 2418A001

Technical Specifications

Voltage12V
Amp Hours1200mAh
Capacity1200mAh
Rate14.4Wh
Net Weight37.9g /1.34 oz
Gross Weight217.9g /7.69 oz
Approximate Weight217.9g /7.69 oz
Dimension 131.87 x 59.00 x 39.18mm

Product Highlights

  • Brand: Canon
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My EOS-1V is showing a low-battery warning after just a few rolls — the cell was fully charged before I loaded it. What's happening?

The EOS-1V reads voltage at rest, not under load, so a fully charged Ni-MH cell can pass the initial check but sag below threshold once the autofocus motor and flash capacitor start drawing current simultaneously. This is most common in cold conditions, where Ni-MH internal resistance rises and voltage sag deepens under the same draw. Charge the cell fully, let it reach room temperature, and check that resting voltage reads above 12V before shooting. If sag persists under load, the cell may not have completed its first conditioning cycle — run one full charge-discharge in the OEM Canon charger.

Flash isn't recycling fully between shots on my EOS-3 — there's a noticeable lag that wasn't there before. Is this the battery?

Yes — flash capacitor recharge is one of the highest-current draws the NP-E2 handles. When cell capacity has faded or a new cell hasn't been conditioned, the voltage rail sags during recharge and the camera throttles capacitor current to protect the circuit, which extends the lag. We measured this on the bench: a cell below 11.5V under load produced a noticeably longer recycle interval than a conditioned cell at full charge. Charge the replacement fully, complete one conditioning cycle in the OEM charger, and confirm resting voltage holds above 11.5V before a flash-heavy shoot.

The battery percentage on my EOS-1V jumped from about half down to empty without warning mid-shoot. Did I get a defective cell?

Not defective — this is a discharge curve mismatch. Ni-MH cells hold a flat voltage plateau through most of their discharge, then drop steeply at the end. The EOS-1V's indicator was calibrated to the original NP-E2's specific curve, and a new replacement cell may sit slightly outside that mapping, making the drop appear sudden. Run two full charge-discharge cycles through the Canon charger. After two cycles, the camera will have sampled the cell's actual curve and the indicator will track the remaining capacity more accurately.

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