"?Cameron Sino As a professional battery manufacturer, Cameron Sino focuses on the stability, safety and compatibility of battery replacement. Cameron Sino has multi-channel protection (overcharge, short circuit, high temperature, surge protection) and high-quality fireproof structure. Product Parameters Fit Model: PowerBot R7040, R1AM7010UW / AA, VR1AM7010U5 / AA, VR1AM7010U5/AA, VR1AM7010UW/AA, VR1AM7040W9 / AA, VR1AM7040W9/AA, VR1AM7040WG / AA, VR1AM7040WG/AA, VR2AK9350WK Volts:21.6 Capacity:6800mAh / 146.88Wh Product Type:?Li-ion Weight:709.2g Size: 128.70 x 79.20 x 50.10mm Precautions before purchase 1.Carefully check the device model and original battery part number to determine whether the battery is compatible with the device. 2.Confirm that the plug is correctly connected to the equipment and installed. 198.Do not use a third-party adapter charger to charge the device, because the battery life will be shortened."