Pure One Mini DAB Radio Replacement Battery 3.7V 6800mAh

Pure One Mini Series — 3.7V Li-ion Replacement Battery (B1 / 101A0)

This is a 3.7V, 6800mAh Li-ion battery that fits the Pure One Mini, One Mini Series II, One Mini Union Jack, and VL-61114 portable DAB digital radio. It replaces OEM part numbers B1 and 101A0. When the original cell loses capacity, this is the direct swap that gets the radio back on air.

• One Mini and Series II compatibility: These models share the same battery bay dimensions, connector pinout, and 3.7V supply rail. The BMS communicates fuel-gauge data over the same two-pin arrangement, so the charge indicator reads accurately on all variants in this family.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on a One Mini unit. The BMS accepted charge without fault codes, the fuel-gauge reported correctly at each stage, and the DAB decoder held lock through to low-battery cutoff without dropout.
• First-use station scan: After fitting this battery, let the radio complete a full auto-scan before manually tuning to any station. DAB station lists sit in volatile memory tied to power state — a fresh scan after any power interruption rebuilds the list correctly and prevents missing or blank presets.

Radio cutting out mid-station at low battery

The DAB decoder inside the One Mini requires a stable voltage supply to maintain stream synchronisation. As the cell discharges toward 3.2V, voltage sag under the decoder's load causes the stream to drop frames, which the radio interprets as signal loss rather than power instability. The result is abrupt cutouts even when the DAB signal itself is strong. If this happens consistently, check the battery voltage under load — anything below 3.3V at the terminals means the cell needs replacing.

Saved stations gone after fitting the new battery

Pure One Mini stores its station list in volatile memory that clears whenever power is fully interrupted — which includes swapping the battery. This is not a fault with the replacement cell. Navigate to the radio's auto-tune or full scan option and run it from start to finish. The radio will rebuild the complete DAB multiplex list for your area, and presets can then be reassigned normally.