This product is a set of two Vax One PWR 4.0Ah Lithium Ion batteries in black colour. These batteries are compatible with the Vax OnePWR model and are suitable for spares or repairs. The set includes two untested batteries that can be used to power your vacuum cleaner. The Vax brand is known for its quality and reliability, making these batteries a good choice for maintaining your cleaning appliance. 1st and 3rd light light up won't charge in charger
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