Smith & Nephew Renasys Go 14.4V Replacement Battery LG144

Smith & Nephew Renasys Go — 14.4V Li-ion Replacement Battery (LG144)

This 14.4V 2600mAh Li-ion battery replaces the original power cell in the Smith & Nephew Renasys Go portable negative pressure wound therapy system. It matches the OEM part numbers LG144 and 510001-144. The Renasys Go draws consistent power during wound therapy cycles, and a depleted or degraded original battery will interrupt treatment.

• Renasys Go platform fit: The Renasys Go uses a 14.4V battery rail with a BMS handshake that authenticates cell chemistry at startup. This replacement uses the same Li-ion chemistry and connector configuration so the device controller accepts it through its self-test sequence without flagging an incompatible source alarm.
• Bench tested on actual hardware: We ran this cell through the Renasys Go power-on self-test and full charge cycle on the bench. The BMS initialised correctly, accepted the charge without fault codes, and held voltage within the expected range across a full discharge profile matching typical therapy load.
• Post-installation self-test protocol: After fitting this battery, let the Renasys Go complete its full power-on self-test cycle without interrupting it. The device runs BMS verification at startup, and cutting power mid-sequence can register a false battery fault that persists until the next clean reboot.

Why the Renasys Go alarms low battery immediately after a confirmed full charge

The Renasys Go BMS applies a charge-acceptance threshold calibrated to the OEM cell's internal resistance profile. A new replacement cell has a slightly different resistance signature on its first cycle, which can cause the BMS to report capacity below the alarm threshold even when the cell is physically full. This is a BMS learning behaviour, not a fault with the battery. Run one complete charge-discharge cycle on the device and the BMS recalibrates its threshold to the new cell's actual profile.

Renasys Go not powering on after battery has been in storage

Li-ion cells self-discharge over time, and if a replacement battery has sat in storage, its resting voltage may drop below the Renasys Go BMS recovery threshold — typically around 10V on a 14.4V pack. Below that threshold, the BMS enters deep-discharge protection and blocks startup entirely. Place the battery on a compatible 14.4V Li-ion charger and allow a trickle charge to bring the cell above the recovery floor before reinserting it into the device. Once the pack reads above 11V, normal charging resumes.