The HZEB-LCT-5 is a 5 kWh wall-mounted LiFePO4 battery — it works for essential-load backup in apartments and small homes, but it is not a whole-home storage solution. Before you quote it to a customer, verify three things: the actual essential-load wattage (not the homeowner's guess), the daily backup hours they expect, and the inverter's continuous output. If their fridge, router, and lights only draw 800W and they need 6 hours of backup, 5 kWh is enough. If they want the well pump and AC included, you're quoting the wrong product.
Who Is the HZEB-LCT-5 Actually For?
This unit is the entry point of the Dawnice wall-mounted range. It's 51.2V, 100Ah, roughly 55 kg, and mounts on a single wall bracket. It suits:
- Apartments and small flats in cities
- Essential-load backup (lights, fridge, router, Wi-Fi)
- Homes where solar self-consumption is the main goal, not multi-day outage independence
- Customers on a tight budget who want to start small and expand later
It does not suit:
- Whole-home backup
- Homes with EV chargers, heat pumps, or well pumps
- Anyone expecting 2+ days of autonomy off-grid
If the customer's load profile doesn't match, move them up to the HZEB-LCT-10 (10 kWh) or stack two units in parallel.
What to Verify on the First Call
1. List the essential loads, with actual wattage
Don't accept "we want backup for the house." Walk through it:
| Load | Typical running watts | Startup watts |
|---|---|---|
| LED lights (5 rooms) | 100W | 100W |
| Refrigerator | 150W | 600W |
| Wi-Fi router | 15W | 15W |
| Phone/laptop chargers | 50W | 50W |
| TV | 80W | 80W |
| Total continuous | ~395W | ~845W peak |
At 400W continuous, a 5 kWh battery at 90% usable delivers roughly 11 hours of runtime. That's enough for an overnight outage. If the homeowner adds a well pump (800W running, 3000W startup), the runtime drops to under 3 hours and the inverter may trip on startup surge.
2. Confirm daily solar generation
If the goal is self-consumption (not just backup), check the rooftop PV size. A 3 kW solar array generates roughly 12–15 kWh on a sunny day in Southern Europe. A 5 kWh battery fills up by early afternoon — fine for a small apartment, but if the home uses 20 kWh/day, you're leaving 60% of the solar on the table.
3. Match the inverter
The HZEB-LCT-5 runs at 51.2V nominal. It pairs with:
- DWH 10–16K single-phase hybrid (oversized for a 5kWh battery, but fine if expansion is planned)
- Smaller 3–5 kW hybrid inverters for tight budgets
- DWA 3–10kW off-grid inverter for small off-grid cabins
The key check: confirm the inverter's maximum charge current. The HZEB-LCT-5 accepts up to 100A charge/discharge current. If the inverter only pushes 50A, you're not getting the full C-rate — but that's usually fine for a 5 kWh apartment system.
When to Upsell to the HZEB-LCT-10 or Larger
If during the call you hear any of these, don't quote the 5 kWh:
- "We want to run the air conditioner during an outage"
- "We have a well pump"
- "We want 2 days of backup"
- "We live off-grid"
Move them to the HZEB-LCT-10 (10 kWh), the BS06-S stack (15.36 kWh+), or the LumiSun-32K all-in-one. The Romania 75 kWh wall-mounted install started as a "we need backup" conversation — the actual load list drove the spec up by 15×. Don't make the customer buy the wrong unit and blame the battery later.
Expansion Path
One advantage of the HZEB-LCT-5: it parallels. A customer who starts with one 5 kWh unit can add a second, third, or fourth later — the BMS supports up to identical units in parallel on the same CAN bus. If the budget is tight today but the load may grow, selling one 5 kWh now with a clear expansion path is better than forcing a 20 kWh cabinet they can't afford.
Quoting the HZEB-LCT-5 to the right customer means a satisfied install. Quoting it to someone who actually needs 20 kWh means a callback in 3 months when the battery dies at 9 PM during an outage.
If you're not sure which size fits the load, send us the load list and the panel details — Ruibit Energy can confirm whether the HZEB-LCT-5 or a larger Dawnice unit is the right spec before you quote.
Frequently Asked Questions
Q1: How long will a 5 kWh battery last during a power outage?
For essential loads only (lights, fridge, router at ~400W continuous), expect roughly 10–11 hours at 90% usable capacity. Add a well pump or air conditioner and runtime drops to 2–3 hours or less.
Q2: Can I add more batteries later?
Yes. The HZEB-LCT-5 supports parallel expansion — you can add up to identical units on the same CAN bus. A customer starting with one 5 kWh unit can grow to 10, 15, or 20 kWh without replacing the original battery.
Q3: Which inverter pairs with the HZEB-LCT-5?
It runs at 51.2V nominal. It works with the DWH 10–16K single-phase hybrid, smaller 3–5 kW hybrid inverters, and the DWA off-grid inverter for cabins. Confirm the inverter supports 51.2V LiFePO4 profiles before ordering.
Q4: Is 5 kWh enough for a whole house?
No. The HZEB-LCT-5 covers essential loads in apartments and small homes. Whole-home backup needs 15 kWh or more — move up to the HZEB-LCT-10, BS06-S stack, or LumiSun-32K all-in-one.
Q5: What's the maximum charge current?
The HZEB-LCT-5 accepts up to 100A charge and discharge current at 51.2V. Most 3–5 kW hybrid inverters push 50–80A, which is sufficient. If you plan to expand to multiple parallel units, confirm the inverter supports the combined current.
