Verizon ENACT Compatible Battery EAC61998402 3.7V 1650mAh

Verizon ENACT / Lucid 2 / VS870 — 3.7V Li-ion Replacement Battery (EAC61998402)

This is a 3.7V, 1650mAh Li-ion battery for the Verizon ENACT, Lucid 2, and VS870 smartphones. It replaces OEM part numbers EAC61998402 and BL-59JH. If your original cell is swelling, failing to hold a charge, or causing unexpected shutdowns, this is the direct cell swap.

• ENACT, Lucid 2, and VS870 compatibility: All three models share the same physical footprint, connector pinout, and BMS handshake protocol — LG used a common battery platform across this hardware generation, so one cell fits the full lineup without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the VS870 platform. The BMS accepted the new cell without triggering a charge fault, and the coulomb counter initialised correctly after one full discharge-to-cutoff cycle.
• Fuel gauge recalibration after install: After fitting this battery, run one complete discharge from 100% down to automatic shutoff before recharging. This gives the fuel gauge IC a clean reference curve to work from — skipping this step is why most users see erratic percentage readings in the first day of use.

Sudden shutdown at 20–30% on the ENACT after a cell swap

This is a voltage cliff problem, not a capacity problem. Under peak modem load or screen-on current draw, a new cell that hasn't been calibrated can sag below the BMS cutoff threshold before the OS registers low battery. The fuel gauge IC is still running the discharge curve from the old worn cell, so its percentage estimate is inaccurate. One full discharge-to-cutoff cycle rewrites the reference table and stops the premature shutoff. If shutdowns continue past the second full cycle, check that the battery connector is fully seated — a partial connection raises impedance and triggers the same sag.

Battery percentage jumping erratically after replacement

The ENACT's fuel gauge IC uses a stored discharge curve to estimate remaining capacity — when a new cell goes in, the stored curve no longer matches the actual cell chemistry state. The result is percentage readings that jump 10–15 points in either direction without corresponding discharge. This corrects itself after the coulomb counter accumulates one full charge and discharge cycle against the new cell. Charge to 100%, use the phone normally until it shuts off automatically, then charge back to 100% without interruption — the gauge stabilises at that point.