How often should a UPS battery be replaced?

The standard lifespan of an SLA/AGM battery is 3–5 years depending on ambient temperature and discharge frequency. If the UPS starts beeping or its LCD shows a battery warning, we recommend replacing the battery promptly to maintain protection against power outages.

Can you replace the battery in my APC Back-UPS?

Yes, we replace batteries in every APC Back-UPS series — BX, BE and BR. We use high-quality SLA/AGM batteries with matching voltage and capacity. Replacement is typically completed within 1–3 working days.

Do you repair UPS charging circuits?

Yes, we diagnose and repair UPS charging circuits at the component level. A common fault is a failed charge regulator IC or a damaged charging transistor. After repair we verify charge voltage and current with precision instruments.

How much does a UPS battery replacement cost?

We quote an exact price after on-site diagnostics at Silmaču iela 6. The cost depends on the UPS model, battery type and capacity. Compact APC Back-UPS batteries cost significantly less than large Smart-UPS or server-grade UPS systems.

Can you fit a higher-capacity battery in my UPS?

In some cases yes — if the UPS enclosure has enough space and the charging circuit can handle the larger capacity. We assess each case individually during diagnostics and recommend the optimal solution.

What warranty do you provide on UPS battery replacement?

Battery replacements carry a 6-month warranty covering the battery and charging circuit operation. If any issues arise during the warranty period, we carry out free repeat diagnostics.

UPS battery replacement and repair in Riga — SATER

Name: UPS battery replacement and repair in Riga — SATER
Brand: UPS Battery

3-month warranty

+371 29 547 002 +371 67 377 002 WhatsApp

SATER service centre at Silmaču iela 6, Riga (LV-1012) performs UPS (uninterruptible power supply) battery replacement and charging circuit repair. Since 1993 — more than 30 years of electronics experience — we have serviced thousands of UPS units across home, office and server-room segments. Our customers rate us 4.3 stars across 186 Google reviews. UPS batteries — whether traditional SLA (Sealed Lead-Acid), AGM (Absorbent Glass Mat) or newer Li-Ion — are consumable components with a limited lifespan, typically 3–5 years. When a battery reaches the end of its life cycle, the UPS can no longer sustain an adequate runtime during a power outage, begins beeping continuously, or shuts down altogether. We replace batteries for all mainstream UPS brands — APC Back-UPS (BX, BE, BR series), APC Smart-UPS (SMT, SMC), Eaton 5E/5P/9SX, CyberPower UT/VP, PowerWalker VI series and Vertiv Liebert. We also diagnose and repair UPS charging circuits when the problem goes beyond the battery itself. Battery replacement carries a 6-month warranty; charging circuit repairs are covered for 3 months. Diagnostics are performed on the spot — the device must be brought in person. Call +371 67377002 or visit us on weekdays and Saturdays from 09:00 to 16:00.

Popular models we repair

APC Back-UPS BX (BX750MI, BX1400UI, BX1600MI)
APC Back-UPS BE / BR (BE700G, BR1500GI)
APC Smart-UPS SMT (SMT750I, SMT1500I, SMT2200I)
APC Smart-UPS SMC (SMC1000I, SMC1500I)
Eaton 5E / 5P / 9SX series
CyberPower UT / VP series
PowerWalker VI series (VI 850, VI 1500)
Vertiv Liebert (GXT5, PSI5)

Common problems we fix

Battery end of life (3–5 year cycle) — UPS no longer provides runtime
UPS beeping continuously — battery replacement indicator active
UPS no longer holds load during outage — equipment shuts off instantly
Charging circuit failure — battery will not charge or charges only partially
Swollen SLA/AGM battery — electrolyte leaked, case deformed

Detailed problem guides

Pick a symptom — we walk through the causes, what you can check yourself, and when to bring it in.

UPS battery replacement: SLA, AGM, and Li-Ion options

Most home and office UPS units use sealed lead-acid (SLA) or absorbent glass mat (AGM) batteries. These batteries are reliable and affordable, but their lifespan is limited — typically 3–5 years depending on ambient temperature. Higher temperatures accelerate degradation: every 10°C above 25°C cuts battery life by roughly 50%. This is why UPS batteries in air-conditioned server rooms last longer than those in an office without climate control.

At our service centre at Silmaču iela 6 we replace SLA and AGM batteries for all mainstream UPS brands. An APC Back-UPS BX series typically requires a single 12V 7Ah or 12V 9Ah battery, while the APC Smart-UPS SMT1500I uses two 12V 12Ah batteries wired in series (24V). Larger Eaton and Vertiv systems may have 4–8 battery blocks with a total voltage up to 192V. We always fit batteries with matching or higher capacity, verify the charge voltage (typically 13.6–13.8V per 12V block) and run a load test after replacement. Some newer UPS systems also support Li-Ion battery kits that offer two to three times longer service life and lower weight — we advise on this option during diagnostics.

UPS charging circuit diagnostics and repair

The UPS charging circuit is a critical component that keeps the battery at full readiness. If the charging circuit malfunctions, even a brand-new battery will not deliver the expected runtime. A typical charging circuit contains a charge regulator IC (often a UC3906 or equivalent), a power MOSFET or bipolar transistor, a current-limiting resistor and a feedback loop with a voltage divider.

We diagnose charging circuits using precision oscilloscopy and voltage/current measurements. Common faults include: charge voltage too low (battery never fully charges), charge voltage too high (battery overheats and degrades prematurely), or zero charge current (complete charging circuit break). On APC Smart-UPS models the charge relays and current-sense resistors fail frequently. On Eaton units we sometimes find issues with the PFC (Power Factor Correction) stage, which affects both charging efficiency and output voltage quality. After component replacement and rework we run a full functional test — verifying the charge profile, switchover to battery mode and return to mains mode. UPS charging circuit repairs carry a 3-month warranty.

Pricing & warranty

Battery replacement warranty: 6 months.

If the repair cost changes during the process, the technician will call to agree on the new price. No work is done without your consent.

Frequently asked questions

Why customers choose SATER

Custom-built battery assemblies. We design and assemble packs for the exact device — no 'close enough' substitutes.
Sony, Samsung, LG, Panasonic, Molicel cells. Only top-tier cells — each one capacity-tested before assembly.
Batteries for robots, power tools, laptops. We build packs for any device that runs on lithium batteries.
30+ years of experience. The service centre has been operating since 1993.
We serve all of Latvia. Our service centre is in Riga and we accept devices from anywhere in the country.