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Blue rectangular Ni-MH battery pack 84 by 50 by 33.61 mm

Centenex Electronics

Centenex Electronics DS-CS-TOBT4SL 12V 2500mAh Ni-MH GPS Battery Blue

SKU CH-23GG-173DX

12 V Ni-MH battery pack powers Topcon BT-4 GPS survey receivers with 2.5 Ah capacity

  • Product typeBattery
  • Purpose-built for Topcon BT-4 GPS survey receivers
  • 12 V 2500 mAh Ni-MH chemistry delivers 30.00 Wh runtime
  • Compact 84.22 × 50.04 × 33.61 mm form factor fits securely
  • Brand-new OEM-compatible unit ensures reliable field performance
  • Distinctive blue housing simplifies identification on site

Compatible GPS Survey Battery

The Centenex Electronics DS-CS-TOBT4SL is a 12V Ni-MH replacement pack built for the Topcon BT-4 GPS survey receiver. It delivers 2500mAh capacity and 30.00Wh energy in a blue housing. Survey crews needing a direct OEM-compatible power source for field receivers will find it matches the original form factor. Buyers requiring a different voltage or chemistry cannot use this pack.

2500mAh Capacity and Runtime

The 2.5Ah rating provides 30.00Wh of energy for extended survey sessions on a single charge. Ni-MH chemistry offers stable 12V output without the self-discharge rates of older nickel-cadmium cells. Runtime ends when the pack is depleted; there is no built-in fuel gauge or hot-swap capability. Teams running continuous multi-day jobs without charging access will need additional packs.

Blue Housing and Direct Fit

The blue casing measures 84.22 x 50.04 x 33.61 mm and slides into the BT-4 battery compartment without adapters. The 100% OEM-compatible claim means the connector and latch align with the original Topcon design. No charger, cable or mounting hardware is bundled in the single-unit package. Users without an existing Topcon charger must source one separately.

How it compares

Measured against everything we stock in GPS Mounts & Accessories, at today’s prices. Recalculated every night.

Price $41.99
Pricier than about 88% of the 716 comparable items (median $14.99).

Specifications

Product
Brand nameCentenex Electronics
Model nameDS-CS-TOBT4SL
Product typeBattery

Questions about this item

Will the 12 V 2500 mAh Ni-MH pack fit my existing Topcon BT-4 receiver without modification?

Yes — the pack measures 84.22 x 50.04 x 33.61 mm and is built as a direct replacement for the BT-4, so it seats in the original battery compartment.

How can I confirm the battery is delivering its rated 30.00 Wh after installation?

Power on the BT-4 and verify the receiver reports full capacity; a healthy pack will sustain the unit through a typical survey session without a low-voltage warning.

Does the blue Centenex DS-CS-TOBT4SL ship with a charger or only the single 2.5 Ah cell?

Only the battery itself is included; a compatible Topcon charger must be sourced separately.

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