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Rectangular black lithium-ion battery, 48 by 35 by 6 millimetres

Cameron & Co

Cameron & Co DS-CS-K750SL cell phone battery 3.7V 650mAh

SKU CH-VKA3-EWGK9 MPN DS-CS-K750SL

Replacement lithium-ion cell rated 3.7 V 650 mAh for listed Sony Ericsson phones

  • Replaces BST-37 in compatible Sony Ericsson models
  • 7 V 650 mAh lithium-ion chemistry delivers 2.41 Wh
  • Slim 5.60 mm profile fits original battery compartment
  • 100 % OEM-compatible fit for listed handsets
  • Ready-to-use black cell shipped brand new

Replacement battery for Sony Ericsson feature phones

The Cameron & Co DS-CS-K750SL is a new lithium-ion cell rated at 3.7 V and 650 mAh. It fits a wide range of handsets including the K750, W800 and Z520 series. The pack measures 48.10 x 34.85 x 5.60 mm and ships in black. It replaces the original BST-37 part number.

Steady discharge at 3.7 volts and 0.65 Ah

Under continuous use the cell delivers its nominal 2.41 Wh at a stable 3.7 V without the voltage sag seen in short bursts. Lithium-ion chemistry maintains consistent output until the pack reaches its low-voltage cut-off. This behaviour suits voice calls and standby cycles typical of the supported models.

Single-cell 3.7 V interface limits

The battery connects through the handset’s proprietary contacts, so it cannot be charged outside the phone or used in devices that expect a different voltage or pin layout. Capacity is fixed at 650 mAh and cannot be expanded by paralleling cells. Users needing longer runtime must carry a spare pack.

How it compares

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

Price $12.99
Cheaper than about 70% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-K750SL

Questions about this item

Does the 3.7 V 650 mAh lithium-ion cell run warm or draw noticeable power during all-day standby?

The 3.7 V 650 mAh lithium-ion cell is designed for low self-discharge and typical phone standby loads, so it stays cool and draws only the small current the handset requires.

Which Sony Ericsson handset must I already own for this BST-37 replacement to fit and connect?

It fits models such as K750i, W800i, K610i, W810i, Z520i and the other handsets listed in the compatibility table that use the BST-37 part number.

Will the 48.10 mm x 34.85 mm x 5.60 mm pack sit flush in an older K600i or W550i without forcing the battery cover?

Yes, the 48.10 x 34.85 x 5.60 mm dimensions match the original BST-37 so the cover closes normally on K600i, W550i and other listed legacy models.

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