Gateway DC-T50 Replacement Battery 3.7V 1050mAh Li-ion

Gateway DC-T50 — 3.7V Li-ion Replacement Battery

This 3.7V, 1050mAh Li-ion cell replaces the original battery in the Gateway DC-T50 compact digital camera. It matches the original voltage and form factor so it seats and connects the same way as the stock cell. Capacity is 1050mAh (3.89Wh), taken from the product specification — not estimated.

• DC-T50 fit: The DC-T50 uses a slim single-cell Li-ion pack at 3.7V nominal. This cell matches that voltage rail and the physical footprint — 53.20 x 35.30 x 7.10mm — so it sits flush in the battery compartment without forcing the door.
• Bench tested on actual hardware: We ran this cell through the DC-T50's charge and discharge cycle. The BMS accepted the cell on first install, charge termination triggered correctly at full voltage, and the camera's battery indicator tracked discharge without jumping erratically after the initial charge cycle.
• First-install charge cycle on the DC-T50: Before shooting, run one full charge cycle through the camera body or the OEM charger. The DC-T50's BMS maps its battery-remaining display against the cell's discharge curve during that first cycle — skipping it causes the indicator to read inaccurately from the start.

Flash recycling slowdown on the DC-T50 near the end of a charge

As a Li-ion cell approaches the lower end of its discharge curve, internal resistance rises and peak current delivery drops. The DC-T50's flash capacitor recharges by pulling a short burst of high current from the battery. When that current delivery sags, the capacitor takes longer to reach full charge — and the camera delays the ready signal between shots. This is not a fault with the cell. It is normal Li-ion behaviour at low state of charge. Recharge the battery when flash recycling noticeably slows; do not push the cell to cutoff during a shoot.

Battery percentage jumping or resetting to full on the DC-T50 display

The DC-T50 maps its fuel gauge to a voltage-threshold table calibrated against the original cell's discharge curve. A new replacement cell — even at the correct voltage — can discharge along a slightly different curve, causing the indicator to jump or briefly reset. This is a gauge calibration issue, not a battery fault. Run two full charge and discharge cycles through the camera body to let the BMS remap the thresholds. After that, the percentage display should track smoothly down from 100V to the 3.0V cutoff.