Zalip CDM530AM Nokia N95 Replacement Battery 3.7V 1500mAh

Zalip CDM530AM / MIFI H1 — 3.7V Li-ion Replacement Battery

This 3.7V, 1500mAh Li-ion cell replaces the original battery in the CDM530AM and MIFI H1. Both devices draw from the same voltage rail and use the same physical footprint — 65.80 × 43.90 × 5.10mm — so one cell covers both. Capacity figures come from the product data, not inflated web listings.

• CDM530AM and MIFI H1 shared cell: Both devices run the same 3.7V nominal rail and use an identical connector pinout. The BMS handshake matches on both platforms — no firmware rejection on pairing.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the CDM530AM platform. The BMS held cutoff correctly at both ends — no premature low-voltage trip, no overcharge event at the top.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one full discharge-charge cycle from 100% to near-empty and back. This lets the fuel gauge IC map its coulomb counter to the new cell's actual discharge curve before high-current charging pushes current into an uncalibrated register.

Sudden shutdown at 20–30% on the replacement cell

The CDM530AM's fuel gauge IC holds a discharge curve learned from the original cell. When a new cell goes in, that stored curve no longer matches the real voltage drop profile. Under modem or screen load, the device hits a voltage cliff the gauge didn't predict and cuts power — even though the displayed percentage still reads 20–30%. Run one full uninterrupted discharge cycle to let the coulomb counter reset against the new cell. After that cycle, the gauge tracks correctly and shutdowns stop.

Device will not power on after sitting in storage

Li-ion cells stored without charge self-discharge over weeks. If the cell drops below 2.5V, the BMS latches into lockout mode and blocks all current flow — the phone shows no response even on charge. Connect to a wall charger, not a USB port, and leave it for 20–30 minutes without touching it. A wall charger delivers enough trickle current to nudge the cell above the BMS recovery threshold, typically around 2.9V. Once the BMS releases, normal charging resumes and the phone powers on.