SCANGRIP Spotlight 03.5710 Compatible Battery 3.7V 1600mAh

SCANGRIP Spotlight — 3.7V Li-Polymer Replacement Battery (03.5710)

This 3.7V, 1600mAh lithium-polymer battery fits the SCANGRIP Spotlight (03.5404). It replaces OEM part 03.5710 directly. The Spotlight is a compact cordless work torch used in maintenance, inspection, and industrial environments where portable lighting is critical.

• Spotlight 03.5404 compatibility: The 03.5404 Spotlight uses a single lithium-polymer cell at 3.7V nominal. The driver circuit pulls directly from this cell, so voltage, physical dimensions (56.50 × 28.70 × 9.00mm), and connector orientation all have to match. This battery meets all three requirements.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Spotlight platform. The BMS handled overcurrent and overvoltage cutoffs correctly, and the driver accepted the cell without fault flags or mode cycling on startup.
• Single-cell replacement discipline: The Spotlight runs on one cell, so there is no multi-cell balancing issue — but do not mix this new cell with a partially discharged original if you are servicing multiple units from the same batch. A low-voltage cell sharing a charge circuit with a fresh one will absorb charge at a different rate and stress both cells.

Why the SCANGRIP Spotlight steps down brightness before the indicator reads empty

The Spotlight's LED driver uses a low-voltage protection threshold — typically around 3.0V for a Li-Polymer cell — to step output current down before the cell hits cutoff. This is not a fault. The driver reduces current to protect the cell from deep discharge damage, which causes permanent capacity loss. You will see the torch dim noticeably while the indicator still shows charge remaining. That gap between perceived brightness drop and indicator reading is intentional headroom built into the driver firmware.

Turbo mode draining the Spotlight cell significantly faster than standard mode

Turbo mode on the Spotlight draws substantially more current than standard output — in many single-cell LED drivers, peak draw is five to ten times higher. A 1600mAh cell has a fixed energy budget, and high current draw exhausts it quickly. Repeated turbo use also generates more heat within the cell, which accelerates capacity fade over time. If turbo sessions are short and frequent, let the cell cool to ambient before recharging — check that the battery body is no longer warm to the touch before placing it on charge.