Infinite Tech, UPS & Power Backup Guides

Common UPS Buying Mistakes: VA, Watts, Batteries and Runtime

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October 29, 2026

On October 29, 2026

Quick answer: The most expensive UPS mistake is buying the wrong specification. Avoid choosing by VA alone, confusing brands, assuming a guaranteed backup time or using a product with unsuitable power characteristics.

Kenya UPS information guide, October 2026. Do not open electrical equipment or assume product specifications without manufacturer verification.

Mistake 1: confusing VA with actual output watts

A 2000VA UPS does not have a guaranteed 2000W output. The ratio depends on its manufacturer-rated power factor and design. Check the two separate limits on the unit label, and never exceed either one. A hypothetical 500W workstation may require much more than 500VA, depending on its measured apparent power.

Mistake 2: assuming bigger VA equals longer runtime

Runtime comes from battery energy, conversion losses and how much power is being used. A 3000VA device could have been designed to support a larger load for a short period rather than a tiny load for hours. Ask for the battery configuration and a runtime chart at your expected demand.

Mistake 3: mixing up manufacturers

APC, Lightwave, Mecer and Mercury are separate brands. A Lightwave 1000VA unit cannot automatically be described with an APC 1000VA battery, waveform, software or warranty specification. Check photos of the actual logo and model code. When browsing, prefer a retailer who differentiates products precisely.

Mistake 4: deciding based on an LCD display alone

An LCD may improve usability, but it does not prove the UPS is online, pure sine wave or longer lasting. Infinite Tech lists the standard Lightwave 2000VA UPS alongside a supplier-labelled Lightwave 2000VA LCD UPS. Before paying a premium for the display, verify the manufacturer model number and what the screen actually shows.

Mistake 5: forgetting every connected device

A desktop may be connected together with a monitor, router, external drive, speakers and printer. The combined electrical load matters. Laser printers, heaters and motors can have high startup draw and should not be connected to normal backup sockets unless explicitly supported. An overloaded UPS may shut off precisely when needed.

Mistake 6: ignoring maintenance and warranty

Ask whether replacement batteries are available locally, whether the unit is new or refurbished, which accessories are included, how warranty service works and whether stock is physically available. An attractive sticker price can be a poor deal if it excludes VAT, the battery pack or essential support.

Frequently asked questions

What should I ask the UPS seller?

Exact model code, output watts and VA, battery and runtime, waveform, socket type, warranty and current stock.

Is 3000VA enough for an office server?

Only after verifying the server load and required topology, waveform and transfer behaviour.

Is an LCD UPS automatically more reliable?

No. Display type is separate from battery and power-conditioning quality.

Compare UPS products at Infinite Tech

Browse Lightwave 650VA UPS · Lightwave 850VA UPS · Lightwave 1000VA UPS · Lightwave 1500VA UPS · Lightwave 2000VA UPS · Lightwave 2000VA LCD UPS · Lightwave 3000VA UPS and all UPS products. Call for availability and exact specifications.

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Sources and assistance

Review the Lightwave product catalogue and Schneider Electric UPS guidance for safe selection principles. Contact Infinite Tech Kenya, Rehema House, Standard Street, Nairobi CBD, for model, pricing and warranty confirmation.