About this replacement
Samsung Galaxy Buds Live SM-R630N — 3.88V Li-Polymer Replacement Battery (EB-BR630ABY)
This is a 3.88V, 500mAh Li-Polymer battery for the Samsung Galaxy Buds Live (SM-R630N). It replaces part number EB-BR630ABY and fits directly into the earbud housing. When the original cell degrades and the buds no longer hold a usable charge, this restores full capacity.
- SM-R630N and Galaxy Buds 3 Pro compatibility: Both models share the same cell form factor, voltage rail, and BMS handshake protocol — 30.70 x 21.00 x 5.50mm footprint with a 3.88V nominal charge curve matched to Samsung's charging IC.
- Bench tested on actual hardware: We ran this cell through Samsung's charge controller and confirmed the BMS accepted the handshake without fault codes. The protection circuit responded correctly to both charge cutoff at 4.35V and low-voltage cutoff near 3.0V.
- First charge after installation: Place the earbud in the case and allow a complete charge cycle before pairing. The Galaxy Buds Live case logs the new cell during this cycle — skipping it causes the companion app to display an inaccurate battery percentage.
Why the Galaxy Buds Live cuts out mid-call on a new battery
The Buds Live drives two simultaneous loads — audio playback and the Bluetooth radio. Under a voice call, peak draw spikes above what idle streaming requires. If the replacement cell hasn't completed a full charge cycle, the BMS can interpret the brief voltage sag from that combined draw as an undervoltage event and cut power. This is not a faulty battery — it resolves after the first two or three full charge cycles stabilise the cell's internal resistance.
Companion app showing 0% or incorrect battery level after replacement
Samsung's Galaxy Wearable app reads battery state through the BMS, not raw voltage. After a cell swap, the BMS ships at storage voltage — roughly 3.6–3.7V — and the app cannot map that to an accurate percentage until the cell completes a calibration cycle. Place both earbuds in the case, close the lid, and let the case charge them to 100% without interruption. After that cycle, the app percentage will track correctly.