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Rectangular lithium battery, blue label, 65.8 by 43.8 by 5.3 mm

Estry

Estry 7710 1300mAh 3.7V standard battery

SKU CH-KEXB-87JAC MPN 7710

Lithium replacement cell delivers 1300mAh at 3.7V for compatible Nokia models including 7710, N92, 9500, E61, 7700, E62, 770 and N800

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity1300mAh
  • Battery Voltage3.7
  • 1300mAh capacity powers compatible devices longer
  • 7V lithium chemistry matches original specifications
  • 8 x 43.8 x 5.3mm form factor fits listed models
  • ISO9001 RoHS CE UN38.3 MSDS certified for safety
  • Overcharge over-discharge over-voltage short-circuit protection extends lifespan

Direct replacement for legacy Nokia handsets

This Estry 7710 lithium cell delivers 1300mAh at 3.7V and matches the original BP-5L form factor of 65.8 x 43.8 x 5.3mm. It fits the 7710, N92, 9500, E61, 7700, E62, 770 and N800 models. Certified to ISO9001, RoHS, CE, UN38.3 and MSDS with overcharge, over-discharge, over-voltage and short-circuit protection built in.

Upgrades worn original cells in daily drivers

Owners of the listed communicators replace swollen or depleted packs with this 4.81Wh unit when talk time drops or standby shortens. The jump is worth it when the original no longer holds a full day of mixed use. Buyers needing higher capacity than 1300mAh or a different voltage cannot use this cell.

Limited to single-cell 3.7V lithium chemistry

The pack uses a standard lithium formulation at 3.7V nominal and cannot serve devices that require multi-cell voltages, NiMH chemistry or proprietary authentication chips. It supplies 1300mAh only; systems demanding greater energy storage or faster charge acceptance fall outside its design envelope.

Highlights

  • 1300mAh capacity powers compatible devices longer
  • 7V lithium chemistry matches original specifications
  • 8 x 43.8 x 5.3mm form factor fits listed models
  • ISO9001 RoHS CE UN38.3 MSDS certified for safety
  • Overcharge over-discharge over-voltage short-circuit protection extends lifespan

Specifications

TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity1300mAh
Battery Voltage3.7

Questions about this item

What are the exact dimensions of the 7710 battery so I can confirm it fits my device?

The battery measures 65.8 mm by 43.8 mm by 5.3 mm and weighs 57.1 g, matching the original BP-5L form factor for the listed compatible models.

How do I install this battery correctly, and what common mistake should I avoid?

Power off the phone, remove the back cover, align the battery contacts with the device terminals, and press gently until seated; do not force it if the orientation is reversed.

When will this 1300mAh lithium cell need replacement, and how can I prolong its life?

Expect 300 to 500 full charge cycles before capacity drops noticeably; avoid deep discharges, store at roughly half charge, and keep the battery away from high heat.

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