Jonsered CC16i Replacement Battery 58V 5000mAh

Jonsered CC16i / HT24i Series — 58V Li-ion Replacement Battery

This 58V 5000mAh (290Wh) Li-ion battery fits the Jonsered CC16i cordless lawn mower, CC16i String Trimmer, HT24i Hedge Trimmer, and eight additional models in the same 58V platform. It slots into the same battery bay and connects via the same multi-pin interface as the original pack. Voltage and capacity match the stock specification exactly.

• 58V platform compatibility: The CC16i, HT24i, and the other ten models in this fit list all share the same 58V bus, connector housing, and BMS handshake protocol — which is why one pack covers the whole range without modification.
• Bench tested on actual hardware: We cycled this pack through repeated blade-start inrush events on the CC16i deck motor. The BMS held the protection threshold correctly and did not trip on standard grass-load startup draws.
• Seasonal storage tip: Before your first mow of spring, bring the battery indoors overnight if temperatures are below 10°C. Cold Li-ion cells carry higher internal resistance, and the blade motor's inrush current can trip the BMS on a cold pack before the cells warm up.

BMS cutoff during thick-grass or wet-grass blade loads

When the CC16i cuts through dense or wet grass, blade resistance spikes and the motor draws a higher instantaneous current than it does on dry, short turf. If that draw crosses the BMS overcurrent threshold — even briefly — the BMS disconnects the pack to protect the cells. This is not a battery fault. Raising the deck height by one notch reduces the motor load enough to keep current below the cutoff point. After a BMS trip, wait 30 seconds before restarting to allow the protection circuit to reset.

Charger shows fault light after the mower sat unused all winter

Li-ion packs self-discharge slowly during storage. After several months in a cold garage, cell voltage can drop below the charger's minimum acceptance threshold — typically around 2.5V per cell — and the charger refuses to begin a charge cycle, showing a red or flashing fault indicator instead. Leave the battery at room temperature (18–22°C) for two to four hours before attempting to charge again. If the charger still shows a fault after warming, check individual cell voltage with a multimeter at the pack terminals — a reading below 42V total suggests one or more cells have dropped into deep-discharge recovery territory.