We prepare lithium and AGM systems for freezing temperatures, short daylight, and storage conditions. Our focus is power only - batteries, chargers, solar, alternator charging, inverters, monitoring, and wiring health.
Service covers Victron-based systems and similar architectures. We align profiles across MultiPlus or Quattro, MPPTs, and DC-DC chargers, verify low temperature charge protection, and document a simple plan for top-off cycles during winter.
A unified profile removes conflict between charge sources and prevents partial charging patterns that confuse shunts.
Charging LiFePO4 below freezing can damage cells. We make sure the system will not allow it or is warmed before charge.
Accurate SOC requires periodic full charges. We set a realistic cadence for winter months with short drives and low solar.
Short days cut solar production. Overcast, low sun angle, snow cover, and shading reduce yield. MPPTs still help, but you should expect reduced daily harvest. We check connectors, combiner boxes, and wire runs, then confirm array configuration and winter settings.
Partial charging becomes the norm. Alternator DC-DC excels at bulk charging during drives, but short trips rarely reach full. We set practical absorption times and advise a periodic shore or generator top-off to keep the battery monitor honest.
Low temperature charging risks. Lithium must not accept charge below freezing. Your BMS should block charge or the batteries must be warmed first. We test for that behavior and verify heater pad relays where installed.
Parasitic loads drain banks in storage. Routers, alarms, trackers, and standby inverters add up. We identify these loads and map a storage switch procedure so the system rests safely without hidden drain.
Note: This is an estimate for planning only and not a quote.
Target a moderate state of charge for storage. Lithium prefers resting in the middle. We document a simple routine so you can disconnect nonessential loads, rest the bank, and top off monthly or as needed.
Use periodic full charges to keep monitors honest. Battery monitors drift if the bank never really reaches full. We set absorption time and tail current so a full charge happens on shore or generator without guesswork.
Drive-time charging is helpful but rarely completes the job. DC-DC current limits protect alternators and wiring. For accurate SOC and maximum runtime, plan occasional stationary top-offs in winter.
Usually no. With a proper storage profile, low temperature charge protection, and a way to isolate parasitic loads, the system can rest in place. Heated enclosures or pads help when storage is below freezing.
Expect reduced yield. We inspect wiring and connectors, confirm configuration, and set realistic expectations. Plan periodic shore or generator top-offs to maintain SOC accuracy.
We verify that the BMS blocks charge until cells are warm or that heaters raise cell temperature before charge. Charging below freezing risks permanent damage and must be prevented.
