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Rectangular nickel-zinc battery, flat grey finish, 52.6 by 34 by 5.2 mm

Cameron Sino Battery for Rand McNally TND-540/550 TOP 523450 1000mAh/3.70Wh

SKU CH-G5TA-FFCZX

Replacement nickel-zinc battery for Rand McNally TND-540 and TND-550 GPS units, 1000mAh capacity

  • Battery pack size52.6 × 34 × 5.2
  • Battery typeNickel zinc
  • Battery capacity1,000 mAh
  • Battery voltage rating3.7 V
  • Details52.6 × 34 × 5.2
  • Product typeNickel zinc
  • Direct replacement for Rand McNally TND-540 and TND-550 GPS units
  • 1000 mAh nickel-zinc cell delivers 3.70 Wh of reliable power
  • Compact 52.60 x 34.00 x 5.20 mm form factor fits the original battery bay
  • Built-in protection against overcharge, over-discharge, over-voltage and short circuit
  • Manufactured to ISO 9001, RoHS and CE standards for safe, durable operation

Replacement Battery for Rand McNally TND-540

This Cameron Sino battery replaces the original TOP 523450 pack in Rand McNally TND-540 and TND-550 GPS navigators. It uses nickel-zinc chemistry rated at 1000mAh and 3.70Wh. The cell measures 52.60 x 34.00 x 5.20mm and weighs 19.0g. A new decoded chip ensures full compatibility with the device.

Thermal Behaviour and Power Characteristics

Nickel-zinc chemistry runs cool during normal navigation use and does not generate noticeable heat. The pack delivers a stable 7.2V output for consistent satellite acquisition and screen brightness. Overcharge, over-discharge, over-voltage and short-circuit protection circuits prevent damage during daily charge cycles. No fan or active cooling is required.

Upgrade Context and Fitment Limits

This unit restores original runtime for owners whose factory pack no longer holds a charge. It is not suited for users needing extended capacity beyond the stock 1000mAh rating. Builders integrating the cell into custom enclosures must verify the 52.60 x 34.00 x 5.20mm footprint and connector alignment. The battery is intended for indoor GPS navigation use only.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $10.99
Typical for this category: the median of 10,440 items is $10.99.

Specifications

Product
Brand nameCameron Sino
Model nameTND-540, TND-550
Part numberTOP 523450
Product typeNickel zinc
Power
Battery typeNickel zinc
Battery capacity1,000 mAh
Battery voltage rating3.7 V
In the box
Battery pack size52.6 × 34 × 5.2

Questions about this item

How do I install this battery in my TND-540 and which step is most often missed?

Open the device, disconnect the old pack, align the new battery's connector with the socket, press it in until it clicks, then reassemble; the step most often missed is verifying the connector is fully seated before closing the case.

What maintenance will this nickel-zinc 1000mAh pack need over its life?

Run two or three full charge and discharge cycles when new to reach peak capacity, avoid low-quality chargers, keep storage temperature below 60 °C, and do not disassemble or expose the pack to fire or water.

What is the first limit I will hit during continuous GPS navigation with this 3.70 V battery?

The 1000 mAh capacity will be the first limit, giving a finite runtime before the voltage drops and the navigator powers down.

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