Sony PS Vita SP86R Replacement Battery 3.7V 2100mAh

Sony PS Vita 2007 / PSV2000 — 3.7V Li-ion Replacement Battery (SP86R)

This is a 3.7V, 2100mAh Li-ion replacement cell for the Sony PS Vita 2007 and PSV2000 handheld consoles (PCH-2007). It matches OEM part numbers SP86R and 4-451-971-01. Fit this battery when the original no longer holds a usable charge or fails to power the console at all.

• PS Vita 2007 and PSV2000 compatibility: Both the PCH-2007 and PSV2000 share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers both units without modification.
• Bench tested on actual hardware: We ran this cell in a PCH-2007 unit and confirmed the BMS accepted the new cell without throwing a charge fault. Charge IC stepped through trickle, CC, and CV phases normally.
• First-cycle fuel gauge reset: After installing, run one complete play session to automatic cutoff before recharging. The PS Vita's fuel gauge IC sets its empty reference point against the first full discharge — skipping this step causes the battery indicator to jump or read inaccurately for subsequent sessions.

PS Vita fuel gauge jumping after a cell swap

The PS Vita uses a coulomb-counting fuel gauge IC that learns the cell's discharge curve over time. When a new cell goes in, the IC still references the old cell's stored parameters. This causes the percentage to jump — sometimes from 40% to 5% in seconds — or to report full when the cell is nearly empty. Running two to three full discharge-to-cutoff cycles lets the IC rebuild its model against the new cell's actual curve. After that, readings stabilise at the correct level.

Console shuts off unexpectedly while the indicator still shows charge remaining

This happens when the cell's voltage sags below the BMS cutoff threshold — typically around 3.0V — before the fuel gauge catches up. A degraded or partially conditioned cell has higher internal resistance, so voltage drops sharply under the GPU and wireless load of active gameplay even if the percentage reads mid-range. A new replacement cell needs three to five charge cycles before internal resistance drops to rated spec and the sag narrows. If shutdowns persist past five cycles, check that the battery connector is fully seated — a loose contact raises effective resistance and triggers early cutoff at the same 3.0V threshold.