Maintenance and battery replacement
UPS batteries are consumables. Most sealed lead-acid batteries last about three to five years, less in hot rooms. Lithium-ion batteries last longer but cost more upfront. Without testing, a UPS can show "normal" for months while its batteries are no longer able to carry the load.
Our maintenance covers battery testing, firmware updates, fan and capacitor checks, cleaning and runtime tests. When batteries reach end of life, we replace them and dispose of the old ones responsibly. See our UPS repair and battery replacement page for details.

