Power tool battery rebuild in Riga — SATER
SATER service centre in Riga provides professional power tool battery rebuilds — we completely replace worn cells with new high-drain lithium-ion cells from MOLICEL, SAMSUNG (40T), SONY (VTC6) and LG. We service all popular brands: Makita 18V LXT, DeWalt 20V MAX, Bosch 18V Professional, Metabo 18V…
SATER service centre in Riga provides professional power tool battery rebuilds — we completely replace worn cells with new high-drain lithium-ion cells from MOLICEL, SAMSUNG (40T), SONY (VTC6) and LG. We service all popular brands: Makita 18V LXT, DeWalt 20V MAX, Bosch 18V Professional, Metabo 18V LiHD, Milwaukee M18, Hilti 22V, Festool 18V and Ryobi ONE+ 18V. Power tool batteries are subjected to extreme current loads — a professional impact driver or angle grinder can draw 30–50 A peak current, which leads to accelerated cell degradation after 500–800 cycles. Our rebuild process includes individual cell diagnostics, complete replacement with high-drain MOLICEL P42A or SAMSUNG 40T cells, and a fresh BMS board. The result often exceeds the original factory capacity, and a rebuild costs significantly less than a new OEM battery. All battery work carries a 6-month warranty. We run diagnostics on the spot at Silmaču iela 6, Riga, LV-1012. Opening hours: Monday–Saturday 09:00–16:00. Call +371 67377002. In-person drop-off only — we do not accept postal shipments.
Popular models we repair
- Makita 18V LXT (BL1850B, BL1860B)
- DeWalt 20V MAX (DCB205, DCB206)
- Bosch 18V Professional (GBA 18V)
- Metabo 18V LiHD (625369)
- Milwaukee M18 (48-11-1850)
- Hilti 22V (B22)
- Festool 18V (BP 18 Li)
- Ryobi ONE+ 18V
Common problems we fix
- One cell group dead — tool dies under load
- BMS lockout — battery will not charge at all
- Cells have lost capacity after 500+ cycles — run time has dropped
- Battery overheats during heavy use — unstable cell
- Charge indicator reads inaccurately — BMS fault
- Corrosion on terminal contacts — weak connection
- Battery does not register in the charger — communication error
- Swollen cells causing the case to crack — dangerous
Detailed problem guides
Pick a symptom — we walk through the causes, what you can check yourself, and when to bring it in.
Why power tool batteries fail and when to rebuild vs replace
Power tool batteries operate under extremely harsh conditions — peak discharge currents of 30–50 A, vibration, dust and temperature swings. These factors combine to cause accelerated cell degradation. After 500–800 full cycles — which for a professional user may be as little as 1–2 years — battery capacity drops by 30–50% and the tool can no longer deliver full power.
The most common failure mode is one cell group dying while the rest are still relatively healthy. In this scenario the BMS detects a voltage imbalance and locks out the entire pack — the tool simply will not work even though most of the cells are still functional. Another common scenario is corrosion on the terminal contacts, which causes intermittent connection loss. Sometimes the battery is not recognised by the charger at all — a communication error between the BMS and the charger controller. In all of these cases a rebuild is far more cost-effective than buying a new OEM battery — especially for professional brands where a new battery can cost EUR 100–200 or more. A SATER rebuild with high-quality cells restores full capacity at a fraction of that price.
SATER's cell-level rebuild: Molicel, Samsung 40T, Sony VTC6
In our battery rebuild process we use only high-drain cells specifically designed for power tool loads. MOLICEL P42A delivers 4200 mAh capacity with 45 A continuous discharge — the ideal cell for impact drivers and drills. SAMSUNG 40T offers 4000 mAh at 35 A continuous — an excellent all-round cell. SONY VTC6 with 3000 mAh and 30 A is a proven solution for more compact packs.
The rebuild process begins with individual cell diagnostics — we measure voltage, internal resistance and capacity to pinpoint the exact degree of degradation. We then fully disassemble the pack, replace all cells (even those that still work — mixing cell generations creates imbalance), fit a fresh BMS board and spot-weld the interconnects. Finally, we run a full charge-discharge test under real load, measuring actual capacity and peak current. This meticulous process ensures the rebuilt battery operates safely and reliably under professional working conditions. Warranty — 6 months. Over 30 years of battery rebuilding expertise, 186 Google reviews at 4.3 stars.
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.