For sale is a FAULTY Genuine Vax OnePWR 4.0Ah Battery Lithium BV25040RB - NOT CHARGING. The red light shows up on the charger when plugged in. Therefore selling as spares and repairs. I aim to send out same day or next day delivery. The Genuine Vax OnePWR 4.0Ah Battery Lithium BV25040RB is a high-quality replacement battery designed specifically for Vax vacuum cleaners. This battery is compatible with the Vax OnePWR model and is made in China. It is a single-pack item that includes one battery, making it an essential part for keeping your vacuum cleaner powered up and ready to use. Unfortunately, this particular battery is faulty and unable to charge, but it could be a valuable component for a repair or maintenance project.