Kress KR133E 20V Replacement Battery 59002628 12500mAh

Kress KR133E / KR136E Series — 20.0V Li-ion Replacement Battery (59002628)

This 20.0V, 12500mAh (250Wh) lithium-ion battery replaces the original pack on Kress cordless lawn mowers including the KR133E, KR136E, and KR174E. It uses OEM part numbers 59002628, 59002634, KA3006, KA3010, and KA3210. The connector and BMS handshake match the original Kress platform directly.

• KR133E / KR136E / KR174E platform fit: These mower models share the same 20V battery rail, connector housing, and BMS communication protocol. One battery works across the platform because Kress standardised the cell-to-deck interface across this lineup.
• Bench tested on actual hardware: We ran this pack through simulated blade-motor inrush loads at 20V nominal. The BMS held the connection through repeated high-draw cycles and balanced the cells correctly after each discharge.
• Seasonal storage before first spring use: Before first use of the season, bring the battery indoors overnight if temperatures are below 10°C. Cold Li-ion cells have higher internal resistance, and the blade motor inrush current can trip the BMS on a cold pack before the mower even starts cutting.

BMS cutoff on thick-grass or wet-grass blade load

The KR133E blade motor draws peak current at startup and again when it hits a dense grass row or wet clippings. If the BMS reads a current spike beyond its protection threshold, it shuts the output to protect the cells. This is not a battery fault — it is the protection circuit working correctly. Slow your mowing pace through thick sections and let the blade reach full speed before engaging heavy growth.

Charger showing a fault light after the mower sat through winter

Li-ion packs self-discharge in storage. If the pack drops below approximately 2.5V per cell over winter, most Kress chargers will flag a fault and refuse to begin a charge cycle. To recover the pack, leave it connected to the charger for 20–30 minutes — some chargers apply a trickle pre-charge to bring cells back above the acceptance threshold. If the charger still rejects it after 30 minutes, check individual cell groups with a multimeter and look for any cell below 2.0V.