This is a generic, equivalent one, 100% compatible. This 2400mAh Replacement Li-ion battery is designed to compatible with Canon EOS 1D 1Ds Mark III Mark IV Mark 3 Mark 4 LP-E4.

Specifications:
* Product Type: generic/equivalent
* Chemistry: Li-ion
* Voltage: 11.10V
* Capacity: 2400mAh
* Dimension: 92.38 x 68.26 x 26.95 mm
* Condition: new, 1 Year Warranty!
* Use Integrated microchip which can prevent overcharge and over-discharge.

Compatible with battery models:
LP-E4, LP-E4N

Compatible with the following Canon camera/camcorder models:
For Canon EOS 1D C
For Canon EOS 1D X
For Canon EOS 1D X Mark II, Mark 2
For Canon EOS 1D Mark III, Mark 3
For Canon EOS 1Ds Mark III, Mark 3
For Canon EOS 1D Mark IV, Mark 4

Note:
1. Battery will NOT show remaining power with Canon EOS-1DX MARII, can be charged with probty charger only.
2. Battery will NOT show remaining power with Canon EOS-1DX, can be charged with the original canon charger.

Battery Maintenance:
1. If you don't plan on using the battery for a month or more, store it in a clean, dry, cool place away from heat and metal objects.
2. Ni-CD, Ni-MH and Li-ion batteries will self-discharge during storage. Remember to recharge the batteries before use.
3. Always remove battery pack from your machine when you are assembling parts, making adjustments, cleaning, or when not being used for an extended time.
4. Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks.