Advantage: Overcharge and overdischarge protection to increase the life of the battery. No memory effect, can be charged or discharged as needed without loss of capacity. Low self-discharge for maximum productivity and less downtime. CE, FCC and RoHS certified, 100% compatible with the originals. No pollution to the environment. Specifications: Voltage: 10.8V Capacity: 3500mAh Battery Type: Ni-MH Replacement Part: For Velux 946933 For Velux 946930 For Velux 846933 Compatible Models: For Velux Roller Shutter Drive, Solar Shutters, SSL Solar Roller Shutters Announcements: Please don't store the batteries for a long time, it need to be used at least once a month. If it's necessary, please using a cotton swab with alcohol to clean the battery and the charger metal contacts.
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