Hi-Target ihand 20 Replacement Battery BL-6300A 3.7V 4600mAh

Hi-Target ihand 20 Series — 3.7V Li-ion Replacement Battery (BL-6300A)

This is a 3.7V 4600mAh Li-ion battery for the Hi-Target ihand 20 and ihand 20 Data Controller GPS handheld GNSS receivers. It replaces OEM part numbers BL-6300A and BL-6300S. The ihand 20 is a field GNSS unit used for surveying, construction staking, and topographic mapping where power access is limited.

• ihand 20 and ihand 20 Data Controller compatibility: Both models run the same 3.7V power rail, use the same BL-6300A form factor, and share the same BMS handshake protocol — one cell fits both units without modification.
• Bench tested on actual hardware: We cycled the pack through GNSS acquisition, active logging, and Bluetooth data transfer simultaneously. The BMS held stable across load transitions and did not trip on satellite lock events, which briefly spike draw as the receiver initialises its signal processor.
• Pre-deployment calibration cycle: After fitting this pack, run a full calibration cycle through the ihand 20 instrument menu before heading to site. The unit maps battery state during calibration — skipping this step causes the low-battery warning to trigger prematurely on the first measurement session, even with a full charge.

BMS lockout on ihand 20 packs left unused in a carry case for months

Li-ion cells self-discharge slowly in storage. If the ihand 20 battery sits unused long enough, cell voltage drops below the BMS recovery threshold — typically around 2.5V per cell — and the protection circuit locks out charging entirely. The unit will show no charge activity when connected to the dock. To recover the pack, apply a low-current pre-charge through a compatible charger that supports recovery mode, which nudges the cell voltage above the BMS wake threshold before full charging begins.

ihand 20 shutting down mid-session during USB data transfer to PC

USB data transfer adds a simultaneous draw on top of the active GNSS engine and display backlight. On a partially depleted pack, this combined load can pull cell voltage below the BMS cutoff threshold momentarily, triggering an abrupt shutdown. The device does not warn — it just cuts off. To avoid this, transfer data with the battery above 40% charge, or connect the unit to external power through the dock during long file exports.