Luiton LT-316 Replacement Battery 3.7V 1100mAh Li-ion

Luiton LT-316 — 3.7V Li-ion Replacement Battery

This 3.7V, 1100mAh lithium-ion battery fits the Luiton LT-316 portable two-way radio. It restores power to handsets where the original cell has degraded or failed. Dimensions are 53.00 × 33.90 × 5.70mm — confirm these against your existing pack before ordering.

• LT-316 platform fit: The LT-316 runs a single-cell 3.7V architecture with a direct contact strip on the rear housing. This replacement matches that voltage rail and physical footprint, so the cell slots into the housing without modification to the door latch or contact pins.
• Bench tested on actual hardware: We cycled this pack through a full charge and a series of PTT-triggered transmit loads. The BMS held the output voltage steady through repeated transmit bursts and tripped correctly on an overcurrent fault simulation — no false lockouts during normal keying.
• First-insertion contact check: If the charger shows a fault LED or fails to begin charging after inserting this pack, remove it, wipe the gold contact strip with a dry cloth, and reseat firmly. The LT-316 charger dock requires a clean contact cycle to accept the BMS handshake before charging will initiate.

LT-316 transmit cutout on a new battery — what's actually happening

A new lithium-ion cell ships at storage voltage, typically around 3.6–3.7V — not at full charge. When you key the PTT immediately after fitting an uncharged replacement, the transmit current spike can pull the cell voltage below the BMS cutoff threshold. The radio cuts audio mid-transmission and may appear dead for a few seconds. This is a BMS protection event, not a fault with the pack. Fully charge the battery before first use on air to bring the cell above the 3.8V threshold where the BMS allows sustained transmit current.

Bar indicator showing one fewer bar than expected after a full charge

The LT-316 uses a simple voltage-threshold bar indicator — each bar maps to a voltage band, not a percentage from a fuel gauge chip. After a full charge cycle, the cell rests at around 4.1–4.2V open circuit. If the radio shows one bar fewer than the original pack did, the display is likely reading a slightly lower resting voltage caused by cell chemistry settling over the first few cycles. Run two full charge-discharge cycles and the resting voltage will stabilise. Check the bar count again at 4.15V or above — that should read as a full indicator on the LT-316 display.