About this replacement
Radiodetection RD8000 Series — 3.7V Li-ion Replacement Battery (09/ER3223Z13)
This 3.7V, 10400mAh Li-ion battery replaces the OEM pack in the Radiodetection RD8000, RD8100, RD7000+, and associated Pipe and Marker Locator variants. It fits the standard battery bay and connects via the original multi-pin interface. Capacity figures are taken directly from product data — 38.48Wh total energy.
- RD8000 / RD8100 / RD7000+ platform fit: These models share the same 3.7V single-cell architecture, bay dimensions, and BMS handshake protocol. One pack covers the full locator family without modification.
- Bench tested on actual hardware: We ran this pack through the RD8000 power-on sequence and active signal-tracing load. The BMS negotiated correctly, held voltage under sustained transmitter and receiver draw, and did not trigger a low-voltage cutoff during signal lock.
- Post-install calibration on RD8000 / RD8100: After fitting this pack, run a full calibration cycle through the instrument menu before field deployment. The RD8000 maps battery state during calibration — skipping it causes premature low-battery warnings during your first locating session, even with a full charge.
BMS lockout after the RD8000 sat unused in a carry case for months
Li-ion cells self-discharge during storage. If the RD8000 pack drops below approximately 2.5V per cell, the BMS trips a protection latch and blocks charge input entirely — the charger sees the pack as absent. This is a safety state, not cell failure. To recover, apply a low-current trickle charge at around 0.1C for 15–30 minutes to lift cell voltage above the BMS recovery threshold, typically 3.0V, then switch to standard charge. Most quality chargers with a recovery or "wake" mode handle this automatically.
RD8000 display showing erratic battery percentage immediately after fitting a new pack
The RD8000 uses a voltage-threshold method to estimate charge state. A new cell has a slightly different discharge curve than the degraded pack it replaced, so the instrument's indicator recalibrates over the first full charge-discharge cycle. The percentage readout will stabilise after one complete cycle — charge to 100%, run the instrument through a normal locating session to drawdown, then recharge fully. After that cycle, the display tracks accurately.