Jimmy JW51 Replacement Battery 21.6V 2500mAh T-DC38H Ready 43 Traffic Constant top-off charging without a

Constant top-off charging without a full discharge cycle causes fuel gauge drift — the indicator reads full while actual capacity has fallen well below rated output

Remove the back cover

so the IC's stored curve no longer matches actual voltage behaviour

If the K520 cuts off at 20–30% and restarts immediately

Buy now and benefit from a high-performance battery designed for real-world use

Jimmy JW51 Replacement Battery 21.6V 2500mAh T-DC38H Ready 43 Traffic Constant top-off charging without aJimmy JW51 JW53 CJ53 CJ57 21. 6V Li ion Replacement Battery (T DC38H) This is a 21. 6V, 2500mAh (54Wh) Li ion replacement battery for the Jimmy JW51, JW53, CJ53, and CJ57 cordless stick vacuums. It uses OEM part numbers T DC38H and T DC38A and slots directly into the same battery bay as the factory cell. Voltage and BMS communication match the original so the vacuum's power indicator and motor control behave normally. JW51 JW53 CJ53 CJ57 platform fit: