Verizon CDM-8992 Hotshot Compatible Battery 3.7V 900mAh

Verizon CDM-8992 Hotshot — 3.7V Li-ion Replacement Battery (TR8992B / BTR8992B)

This 3.7V, 900mAh Li-ion cell replaces the original battery in the Verizon CDM-8992 Hotshot. It fits both the CDM-8992 and CDM-8992 Hotshot variants using OEM part numbers TR8992B and BTR8992B. Capacity is 3.33Wh — matching the stock specification.

• CDM-8992 and CDM-8992 Hotshot fitment: Both variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers both. The 45.30 x 51.90 x 4.00mm footprint seats flush without modification.
• Bench tested on actual hardware: We cycled this cell through charge and full discharge on a CDM-8992 platform. The BMS accepted the cell without error flags, and the charge IC completed a full CC/CV cycle without cutoff interruption.
• Fuel gauge recalibration on first cycle: After installing a new cell, run one complete discharge to near-empty before recharging. The Hotshot's fuel gauge IC is calibrated to the old cell's discharge curve — one full cycle overwrites that reference and stops erratic percentage readings from the start.

Sudden shutdown at 20–30% on the CDM-8992 after a cell swap

A new Li-ion cell has a slightly different voltage-versus-capacity curve than the worn cell the phone learned on. When the Hotshot's fuel gauge IC reads 25% remaining, the actual cell voltage may already be near the BMS cutoff threshold under modem or screen load. The phone shuts down because the BMS triggers before the OS expects it. One full discharge-to-recharge cycle lets the coulomb counter reset its end-of-discharge reference against the new cell's actual curve. After that cycle, the reported percentage and the real cutoff point realign.

Phone warm near the battery compartment during the first charge

A fresh cell from storage starts with higher internal impedance than a conditioned one. The charge IC pushes current into that higher resistance, and some energy converts to heat rather than stored charge. This is normal on the first one or two cycles and fades as the cell conditions. If the warmth continues past the second full charge, check that the battery contacts are fully seated — a partially engaged connector forces current through a smaller contact area and raises localised resistance at the terminal.