Microtek UPS create their customer satisfaction first, i am using Microtek UPS 610EB from last 3 year and never get a single problem regarding battery or fuse problems.Because battery is two belongs to Microtek.I will really appreciate Microtek for achieving such a high Reputation for their works. from the Day I installed UPS I was never running out of Electricity while we have use other company but the result was quit undigestable,