Battery High Energy Lithium Battery, Color Black, Stroke 12mm, Chaging Time 90 Min, Weight 1.04kg/2.40kg(Includes Charger And Packaging), Rated Input 100-240V~50/60Hz / 25W, Battery Capacity 2000mAh, Model Booster Pro 2, Working Time 3.5-4 Hrs, Sound Pressure Level 70 dB(A), Power 135W Max., Rated Output 25V/1A, Sound Power 78 dB(A), Rated Voltage 24V DC, Unloaded Speed 1800-3400/Min Max., Size 200*60*285mm, Material ABS.
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Banggood
Warehouse in China.
Link: Booster Pro 2 Deep Tissue Muscle Massager
$176.63 with coupon: BGCAPITALOS8
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