Vax ONEPWR 4.0Ah Lithium Ion Battery – Genuine Replacement (18V) Genuine Vax ONEPWR 4.0Ah lithium-ion battery, suitable for a range of Vax cordless vacuum cleaners and cleaning devices. ✅ Model: BV25040 ✅ Capacity: 4.0Ah (72Wh) ✅ Voltage: 18V ✅ Type: Lithium-ion rechargeable battery ✅ Condition: Good used condition with some light cosmetic marks from normal use (see photos). Clips and terminals in good order. ✅ Tested: Sold UNTESTED ✅ Compatibility: Fits Vax ONEPWR range – please double check compatibility with your specific model before purchase. ???? Postage: Securely packed and dispatched quickly.