Sokkia SHC-236 Replacement Battery 3.7V 6800mAh 60991

Sokkia SHC-236 / SHC-336 — 3.7V Li-ion Replacement Battery (60991)

This 3.7V, 6800mAh lithium-ion battery replaces the OEM part 60991 in the Sokkia SHC-236 and SHC-336 handheld data collectors. These devices are used in logistics, inventory, and field survey operations where scan throughput and wireless uptime matter. Voltage and capacity match the original spec exactly.

• SHC-236 and SHC-336 compatibility: Both models run the same 3.7V battery rail, share the same physical housing dimensions, and use the same BMS handshake protocol — one cell fits both. The connector and contact pad layout are identical across the two units.
• Bench tested on actual hardware: We ran this pack in an SHC-236 under simulated pick-and-pack load — repeated scan trigger bursts with active Bluetooth polling. The BMS held voltage stable across the draw cycle and did not trip at any point during testing.
• First-shift preparation on the SHC-236: After installing this pack, seat the scanner in its cradle and let it complete a full charge cycle before the first shift. Scan trigger inrush current is highest when the cell is near minimum, and a fully charged pack prevents false BMS trips during that first heavy-use period.

Cradle showing a charging error on a new pack

The SHC-236 cradle reads the battery through spring-loaded contact pads. If those pads or the corresponding contacts on the pack have oxidation or debris, the dock reports a charging fault even though the pack itself is fine. Wipe both the cradle contacts and the battery contact strip with a dry lint-free cloth, then reseat the scanner firmly until it clicks. If the error clears, the pack charges normally — the fault was contact resistance, not the cell.

Scanner drops wireless connection during rapid scan bursts

On the SHC-236, the scan trigger and the wireless radio draw current simultaneously during a fast burst sequence. If the cell voltage sags below the radio module's minimum threshold during that combined inrush, the wireless link drops momentarily before recovering. This happens most often when the battery is below 20% charge. Keep the pack above 3.5V under load — if dropouts begin, dock the unit and charge before continuing high-frequency scan work.