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CyberPower is popular as a slightly less expensive alternative to APC, but there are huge differences in the two companies’ approaches. 1) APC installations are easy and their instructions clear. These CyberPower replacements were very difficult to understand, and in tiny print. For example, they say to connect wires to same color (e.g., red to red), but don’t mention that they’re in a “series,” meaning that the middle wire goes from black to red—a flat-out contradiction if you’re not the handyman type. The time I spent confirming that little fact easily convinced me to avoid the brand in the future. 2) The original unit includes a middle piece between the two batteries and an important piece of unbreakable tape to hold them together. Nowhere do the instructions caution the customer to hang onto those two original items. In fact, I threw the tape away, intending to replace it with clear mailing tape. I was fortunate to be able to retrieve it from the trash and reuse it. 3) The tolerances in connecting the two batteries were tighter than they needed to be, especially since a couple of wires have to cross one another. 4) The new black wire was frayed and quite exposed in the middle and I could have gotten a nasty shock. 5) I owned a smaller, separate CyberPower UPS that also needed batteries and discovered that the company makes no replacement for them. So I had to buy a brand new unit at twice the cost of a battery.
I own three CyberPower units, including the expensive, heavy-duty unit that required theis double stack. My overall impression of the company: they care about sales, but not customers.