HB5D1 Huawei C5600 Replacement Battery 3.7V 900mAh

Huawei C5600 / C5110 / C5700 / C5720 — 3.7V Li-ion Replacement Battery (HB5D1)

This is a 3.7V, 900mAh Li-ion replacement battery for the Huawei C5600, C5110, C5700, and C5720 smartphones. It uses OEM part number HB5D1 and fits directly into the battery bay on these models. Capacity is 900mAh (3.33Wh), matching the original cell specification.

• C5600 / C5110 / C5700 / C5720 platform fit: These four models share the same battery bay dimensions, contact pin layout, and BMS handshake protocol — all validated against the HB5D1 part number. The connector orientation and cell dimensions (43.77 × 36.06 × 5.62mm) are identical across this model group.
• Bench tested on actual hardware: We cycled this cell on the C5600 through charge and discharge under screen-on and modem-active loads. The BMS accepted full charge current, held voltage above 3.5V through the mid-discharge range, and triggered low-voltage cutoff at the correct threshold without false trips.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging pushes into an uncalibrated state — which causes erratic percentage readings.

Sudden shutdown at 20–30% on the HB5D1 replacement cell

This happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. The new cell hits a voltage cliff — a rapid drop below the load-sustain threshold — while the OS still shows 20–30% remaining. The modem or display draws a current spike, voltage collapses faster than the gauge tracks, and the BMS trips the cutoff. One full discharge-to-charge cycle without fast charging forces the coulomb counter to recalibrate against the new cell's actual curve and eliminates these phantom shutdowns.

Phone shows incorrect battery percentage after cell swap

The fuel gauge IC stores a learned discharge model from the original cell. After a replacement, that stored model no longer matches the new cell's chemistry profile, so reported percentage drifts — often jumping 5–15% in either direction. To reset it, charge the phone to 100%, let it discharge fully until it shuts off, then charge uninterrupted back to 100%. After one complete cycle, the coulomb counter locks onto the new cell curve and percentage accuracy stabilises at ±3%.