DR202 Kiwi OpenNote 820 Replacement Battery 10.8V 6600mAh

Kiwi OpenNote 820 — 10.8V Li-ion Replacement Battery (DR202)

This is a 10.8V, 6600mAh (71.28Wh) Li-ion battery for the Kiwi OpenNote 820 notebook. It replaces OEM part numbers DR202, EMC36, ME202BB, NL2020, and SMP02. If the original cell has degraded or failed, this restores full unplugged operation on that laptop.

• OpenNote 820 fitment: All five OEM part numbers listed above share the same connector pinout, voltage rail, and BMS handshake protocol on the OpenNote 820 platform. Swapping between them does not require firmware changes or adapter modifications.
• Bench tested on actual hardware: We ran this cell through charge, full load discharge, and BMS cutoff cycles on the OpenNote 820. The protection circuit tripped correctly at low-voltage cutoff and recovery charging resumed without manual reset.
• Post-swap calibration on the OpenNote 820: After installing, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This single learn cycle resets the BIOS battery health tracking against the new cell's actual capacity curve and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting poor battery health after installing a new cell

The OpenNote 820 BIOS stores battery learn data from the previous cell in EEPROM. When a new cell goes in, the old wear data is still there — so the system flags health as poor before it has measured the replacement at all. This is a firmware state issue, not a cell defect. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100% to force the BIOS to rewrite its learn data against the new cell. After that cycle, the health indicator should read accurately.

Laptop shuts down at 20–30% charge remaining

This happens when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The gauge was trained on the old, degraded cell and still expects the voltage cliff at the same point. Under full CPU and display load, the real voltage drop at that state-of-charge triggers an emergency shutdown before the displayed percentage reaches zero. Run two to three complete discharge-to-hibernate and full-charge cycles. After calibration, the shutdown threshold aligns with actual cell voltage — target a resting voltage of 10.8V at full charge to confirm the gauge is tracking correctly.