3700mAh Lithium-Ion for F25 Ultra/ Steam/Ace Pro/Ace Combo/RT//LT/BX/ALT/XT Rechargeable A
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3700mAh 21.6V Lithium-Ion Battery:This 3700mAh 21.6V rechargeable battery is a replacement for BCR-61P-4000TS/4000MS/4000TF vacuum cleaners,
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