Toshiba Allegretto 5300 Compatible Battery 3.7V 1050mAh

Toshiba Allegretto 5300 / PDR-5300 — 3.7V Li-ion Replacement Battery (084-07042L-066)

This 3.7V, 1050mAh Li-ion cell replaces the original battery in the Toshiba Allegretto 5300, PDR-5300, PDR-T20, PDR-T30, and over 20 additional Toshiba point-and-shoot models. It matches the OEM voltage, capacity, and physical footprint at 53.20 × 35.30 × 7.10mm. Cross-references include 084-07042L-012, PDR-BT3, PX1425E-1BRS, and PA3792U.

• Allegretto 5300 / PDR-T series compatibility: These models share the same voltage rail, battery bay dimensions, and BMS communication protocol — one cell format covers the full lineup without modification or adapter.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on camera hardware. The BMS accepted the cell, voltage held steady through normal photo capture, and the protection circuit triggered correctly at the low-voltage cutoff threshold.
• First-use charge cycle tip: On first install, run one full charge inside the camera body or OEM charger before shooting. Some Toshiba BMS firmware maps battery-remaining display to a reference charge curve — skipping this step can cause the indicator to read inaccurately from the start.

Why the Allegretto 5300 battery indicator drops suddenly near the end of a charge

Li-ion cells discharge along a voltage curve that stays relatively flat through most of the cycle, then drops steeply below 3.5V. The Allegretto 5300's BMS maps that voltage curve to a percentage scale. A replacement cell with a slightly different internal resistance profile can cause the indicator to appear stable, then fall fast in the final stretch. This is a display mapping issue, not a cell fault. One full charge-discharge cycle inside the camera usually lets the BMS recalibrate its reference points.

Flash not fully recycling between shots on a new cell

The flash capacitor draws a significant burst of current each time it recharges — higher than the sustained draw during normal shooting. If the cell's internal resistance is elevated, voltage sags during that recharge burst and the capacitor doesn't reach full charge before the next shot. On a new replacement cell this can happen briefly while the cell conditions through early cycles. If recycle lag persists after five or six charge cycles, check the contact pins in the battery bay for corrosion or debris. Clean the contacts with a dry cloth and confirm the cell is seated flush at 3.7V before shooting.