SCANGRIP Miniform COB LED Compatible Battery 3.7V 1000mAh

SCANGRIP Miniform COB LED — 3.7V Li-Polymer Replacement Battery (03.5318)

This is a 3.7V 1000mAh Li-Polymer replacement battery for the SCANGRIP Miniform COB LED work light (model 03.5060). It replaces OEM part 03.5318 and restores full output to the light after the original cell has degraded through repeated charge cycles. Capacity is 3.7Wh — identical to the factory-fitted cell.

• Miniform COB LED fit (03.5060): The Miniform runs a single Li-Polymer cell at 3.7V nominal. The driver circuit is tuned to this voltage rail and the physical cell dimensions — 41.50 × 30.00 × 8.20mm — match the internal bay exactly. No connector modification needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Miniform driver board. The BMS held cutoff at the correct low-voltage threshold and accepted a full charge without error. Output brightness tracked the original cell across all modes.
• Li-Polymer storage precaution for the Miniform: If the light will sit unused for more than a month, discharge to around 50% before storing. The Miniform has no automatic sleep cutoff — leaving it fully charged in storage accelerates cell swelling in Li-Polymer chemistry.

Miniform COB LED dimming before the battery indicator trips

The Miniform driver uses brownout protection to step down output before the battery voltage drops below the hard cutoff. This means the light dims noticeably while the indicator still shows charge remaining. It is not a fault — the driver is protecting the cell from over-discharge. When you see the step-down, the cell is typically sitting between 3.4V and 3.5V. Swapping in a fresh cell at this point restores full output immediately.

Replacement cell not recognised after fitting — light won't turn on

Li-Polymer cells can ship in a low-voltage protection state after transit. If the Miniform shows no response after installing this battery, the cell voltage may be sitting below the driver's minimum input threshold. Connect the light to its USB charger immediately after fitting — the charger circuit can recover the cell from as low as 2.5V. If the indicator light on the charger does not activate within 60 seconds, disconnect and reconnect to trigger the recovery sequence. A full charge cycle from this point brings the cell back to 3.7V nominal.