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Small rectangular Ni-MH battery pack, green shrink wrap with white label, 46 by 42 by 11 millimetres

Estry

Estry F13 4.8V 900mAh standard battery

SKU CH-EMXV-B77SE MPN F13

4.8 V Ni-MH battery rated at 900 mAh replaces original packs in listed BMW models

  • Specifications4.8
  • Battery Pack1 Year
  • Exact original specifications for reliable performance
  • 8 V 900 mAh Ni-MH chemistry delivers 4.32 Wh capacity
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Replaces OEM part numbers 9297787, 9371789 and 84109297787
  • Compact 46.0 x 42.5 x 11.0 mm design weighs 80.0 g

Battery Chemistry and Vehicle Fit

The Estry F13 is a nickel-metal hydride replacement cell rated at 4.8V and 900mAh. It matches the original specifications for several vehicle key fobs and remote modules listed in the compatible model list.

Sustained Power Delivery

Ni-MH chemistry provides a stable voltage curve during extended use rather than a sharp drop after a brief burst. The pack includes overcharge, over-discharge, over-voltage and short-circuit protection to maintain safe operation over repeated cycles.

Part-Number Verification Required

Fitment depends on matching the exact OEM part numbers such as 9297787 or 9371789. Buyers who cannot confirm their remote uses one of these references will find the cell does not fit their application.

Highlights

  • Exact original specifications for reliable performance
  • 8 V 900 mAh Ni-MH chemistry delivers 4.32 Wh capacity
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection
  • Replaces OEM part numbers 9297787, 9371789 and 84109297787
  • Compact 46.0 x 42.5 x 11.0 mm design weighs 80.0 g

Specifications

BrandNi-MH
Model900mAh
Specifications4.8
Battery Pack1 Year

Questions about this item

Does the 4.8 V 900 mAh Ni-MH pack run warm during continuous use?

The 4.8 V 900 mAh Ni-MH chemistry is designed for low self-discharge and stable temperature under normal load, and the built-in over-voltage and short-circuit protection limits heat rise during all-day operation.

Which original part numbers must my device already use for this replacement to fit?

This battery replaces part numbers 9297787, 9371789, 9 297 787-02, 84109297787 and 84 10 9 297 787, so your device should currently use one of those codes.

Will the 46.0 × 42.5 × 11.0 mm dimensions match the battery compartment in my older F13 M6 or F22 2er?

The pack measures 46.0 × 42.5 × 11.0 mm and weighs 80.0 g, matching the original footprint for the listed F13 M6, F22 2er, F48 X1 and F22 M240i models.

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