About this replacement
Alinco DJ-10 / DJ-A10 Series — 7.4V Li-ion Replacement Battery (EBP-88H)
This 7.4V, 2000mAh Li-ion battery replaces the OEM EBP-88H, EBP-88, and EBP-87 packs used in the Alinco DJ-10, DJ-A10, DJ-100, DJ-W100, and related handheld transceivers. It fits directly into the original battery compartment with no modification. Capacity is rated at 14.8Wh, matching factory specification.
- DJ-10 / DJ-W100 platform fit: These models share the same battery form factor, connector pinout, and 7.4V nominal rail. One pack covers all variants listed because the BMS handshake voltage range is identical across the series.
- Bench tested on actual hardware: We cycled this pack through charge and discharge on a DJ-10 unit. The BMS held cutoff correctly at both the low-voltage floor and the transmit current spike during PTT press — no false trips recorded.
- First insertion into the charger dock: If the dock LED shows a fault on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Alinco dock requires a clean contact cycle to recognise the new BMS before charging begins.
Why the DJ-10 cuts out mid-transmission on a new EBP-88H
New Li-ion cells ship at storage voltage — typically 3.6–3.7V per cell, not full charge. When you press PTT, transmit current spikes sharply. If the pack hasn't completed its first full charge cycle, that spike can pull cell voltage below the BMS cutoff threshold and trip a protection shutdown. The radio goes silent mid-call even though the battery appears charged. Run one complete charge before the first use to bring both cells to 4.2V and give the BMS its proper operating headroom.
Bar indicator showing one fewer bar than expected after a full charge
The DJ-10 reads battery level using a simple voltage-threshold system — each bar corresponds to a voltage window, not a fuel gauge reading. A new pack at storage voltage sits in the lower threshold window and displays fewer bars even after the charger LED turns green. This is a voltage baseline issue, not a defective cell. After the first full charge cycle reaches 8.4V across both cells, the indicator will display the correct bar count on next power-on.