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Rectangular lithium-ion battery pack, black plastic casing, gold contacts visible

Cameron Sino MR2100 NightHawk M2 cell phone battery 5040mAh 18.65Wh

SKU CH-9YWH-DHQDB MPN MR2100

Replacement lithium-ion battery for Telstra MR2100 and NightHawk M2 hotspots, 5040mAh 18.65Wh with decoded chip and protection circuits

  • Total capacity5,040 mAh / 18.65 Wh
  • Product weight140
  • Replacement battery fits Telstra MR2100 and NightHawk M2
  • 5040mAh capacity delivers 18.65Wh of power
  • Certified to ISO 9001, RoHS and CE standards
  • Built-in protection against overcharge, over-discharge and short circuit
  • 70 x 62.40 x 9.32mm dimensions match original battery

Direct Replacement Battery

The Cameron Sino MR2100 NightHawk M2 battery is a new lithium-ion cell built to match the original Telstra W-10a specifications. It fits the MR2100 and NightHawk M2 mobile hotspot models and carries ISO9001, RoHS and CE certifications.

Thermal and Power Profile

Rated at 3.7 volts with a capacity of 5040mAh and 18.65Wh, the pack delivers steady output for typical hotspot workloads. The fully decoded chip communicates with the device exactly like the factory unit, so charging and discharge curves remain standard without extra heat or noise.

Upgrade Context

This unit replaces a worn or swollen original battery in the same hotspot, restoring full runtime without changing chargers or cables. It is not suited for devices that require a different voltage, capacity or physical footprint, nor for users who need extended capacity beyond the stock 18.65Wh rating.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $15.99
Pricier than about 60% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Product line78.7 × 62.4 × 9.32 mm
Model nameMR2100, NightHawk M2
Part numberW-10a
Total capacity5,040 mAh / 18.65 Wh

Questions about this item

How do I install the MR2100 battery and connect the W-10a connector correctly?

Open the Telstra MR2100 or NightHawk M2 hotspot, align the 78.70 x 62.40 x 9.32mm battery, and press the W-10a connector firmly until it clicks; a loose connection prevents charging.

What maintenance does the 5040mAh lithium-ion cell need over time?

Run two or three full charge and discharge cycles when new; afterwards avoid third-party chargers and store below 60 °C to preserve the 18.65Wh capacity.

At what temperature does sustained use risk damaging the 3.7V battery?

Continuous operation or storage above 60 °C accelerates degradation and triggers the protection circuit, limiting the 5040mAh pack's lifespan.

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