About this replacement
Barnes & Noble NOOK Color — 3.7V Li-Polymer Replacement Battery (AVPB001-A110-01)
This 3.7V 3200mAh lithium-polymer cell replaces the original battery in the Barnes & Noble NOOK Color e-reader. It also fits the Nook Tablet and BNTV250A. Swap it in when the original cell can no longer hold enough charge to get through a reading session.
- NOOK Color and Nook Tablet platform fit: The NOOK Color and Nook Tablet share the same battery bay dimensions, connector pinout, and 3.7V supply rail. Both devices use the same BMS communication protocol, so this cell registers correctly on either platform without triggering a fault state.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on NOOK Color hardware. The BMS accepted the cell without error, balanced charging initiated normally, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
- Post-swap charging on the NOOK Color: After fitting this cell, charge via USB until the indicator shows full before powering on. The NOOK Color's firmware recalibrates the battery percentage display from a complete charge cycle — skipping this step causes the percentage counter to read inaccurately for the first several sessions.
Why the NOOK Color battery percentage jumps around after a cell swap
The NOOK Color tracks battery state using a fuel gauge algorithm calibrated to the original cell's discharge curve. When a new cell goes in, that calibration is out of sync until the firmware runs a full charge-to-discharge cycle. Until then, percentage readings can jump several points between page turns or drop suddenly without warning. Run two full charge cycles — charge to 100%, read until shutdown, then charge to 100% again — and the gauge settles.
NOOK Color showing low battery warning immediately after new cell installed
Replacement cells ship in storage state, typically between 3.0V and 3.3V. The NOOK Color's firmware treats anything below roughly 3.5V as a low-battery condition and throws the warning immediately on boot. This is not a faulty cell. Connect the USB charger before attempting to power on and leave it for at least 10 minutes — once the cell climbs above the minimum threshold, the warning clears and normal charging resumes.