Africa's Bestselling All-in-One: 3.6kW + 7.68kWh, 10ms UPS Switchover
Why a 3.6kW inverter paired with 7.68kWh of battery became the volume seller in Africa. What a 10ms UPS switchover means on an unstable grid, how grid plus solar work as simultaneous inputs, and why the inverter carries a 2-year warranty while the battery carries five.
This unit pairs a 3.6kW inverter with 7.68kWh of battery, and it is the model we ship most into Africa. Today, why it became the volume seller — not because it is cheap, but because three things line up with what the market actually needs: fast transfer, grid and solar at the same time, and a warranty that means something.
10ms transfer: a requirement, not a bonus
The unit has built-in UPS function with a 10ms transfer time. Mains drops, and it moves to battery within 10 milliseconds.
What does 10ms mean? A PC power supply, a router, LED lighting — none of them notice a gap that short. No reboot, no dropped connection. And in much of Africa the grid problem is not long blackouts; it is **frequent short flickers**, seven or eight drops a day lasting seconds. In that scenario you do not need a huge bank that runs ten hours — you need a unit that **never lets the flicker through**. That is what sells it.
It is also the feedback we hear most: once installed, the computer no longer needs its own UPS, the router stays up, the cameras keep recording.
Grid and solar together, not either-or
The unit accepts mains and solar as inputs, and it accepts them **at the same time** — grid and panels both connected, with the machine deciding what to draw first. Sun up, it runs the load from PV and charges; sun down or insufficient, it falls back to grid or battery. Where tariffs are high and the sun is good, that combination is what saves money.
The 7.68kWh capacity is sized to match. It is not there to run you off-grid for ten days; it covers the **peak window of the day** — those evening hours when the sun is gone and the grid is expensive and unsteady. Charge by day from PV, discharge in the evening: one cycle a day, which lines up well with the battery's cycle life.
Warranty: 2 years on the inverter, 5 on the battery
Inverter carries 2 years, battery carries 5. The reflex reading — "so the battery must be more reliable" — is not quite right.
The inverter holds power devices running hot under high voltage and current. It is a harsher duty than the cells see, and the failure rate is genuinely higher, which is why inverter warranties are universally shorter. LiFePO4 cells have long cycle life, so a longer battery warranty is standard practice in the industry.
So the gap **does not mean the battery outlasts the inverter** as a rule. It reflects two different failure curves. Judging real reliability means looking at what components a factory uses and whether it runs burn-in — not at the warranty number. We put five years on the battery because the cells reach it and the factory cycle records back it up.
Who should look at this unit
Households and small shops in Africa and similar grids — frequent flicker, decent sun, and a need to keep computers and internet alive. 3.6kW carries fridge, lighting, fans, TV and router; 7.68kWh covers the evening-to-night peak window. For air conditioning or water pumps, step up to the 6kW or 12kW models.
FAQ
- What is the core configuration of this unit?
A 3.6kW inverter with 7.68kWh of lithium battery in one enclosure, accepting grid and solar as simultaneous inputs, with UPS functionality built in. - What does a 10ms UPS switchover mean?
When mains power drops, the unit transfers to battery within 10 milliseconds. That is fast enough that computers, routers and lighting never notice the outage — no reboot, no dropped connection. - Why is the inverter warranted 2 years while the battery gets 5?
The inverter's power devices run hot under high voltage and current and fail more often; LiFePO4 cells have a long cycle life, so a longer battery warranty is standard practice. It does not mean the battery is inherently more reliable than the inverter.
Want the factory walkthrough video or a quote? Reach out to Luchu Energy and tell us your application — our engineers will spec a system.