ECTIVE LC 120 Dual 12V vs ECTIVE LC 280s LT Underseat
Technical comparison · Lithium batteries for campers
Two 12 V batteries from the same maker, both with cold-charge protection, in two sizes: 120 Ah in a 10.2 kg body, or 280 Ah (3.584 kWh) at 28 kg. What decides is whether you need a small, light battery or one that handles currents of 350 A (manufacturer-declared values).
| Parameter | ||
|---|---|---|
| Awards | — | |
| In brief | ||
| Capacity in kWh | — | 3.584 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| List price | 839 € | 2249 € |
| Weight | 10.2 kg | 28 kg |
| Dimensions (W×D×H) | 31.5 × 17.5 × 19 cm | 34.5 × 33 × 14.5 cm |
| How long it lasts | ||
| Battery life cycles | 1825 cicli | 2555 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 2000 cicli | — |
| Warranty | 5 anni | 7 anni |
| The numbers | ||
| Cost of stored energy | — | 0.246 €/kWh |
| Energy density | — | 128 Wh/kg |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | 839 € | 2249 € |
| Category specs | ||
| System voltage | 12 V | 12 V |
| Capacity | 120 Ah | 280 Ah |
| Maximum discharge current | 120 A | 350 A |
| Maximum charge current | 120 A | 200 A |
| Low-temperature charge protection | Yes | Yes |
| Bluetooth monitoring | — | Yes |
| Ingress protection | — | IP21 |
JouleSpecs Awards
No awards in this tier.
Best value Flat-sized (3–8 kWh)
Best balance of technical score and price among the 5 sheets in the Lithium batteries for campers category (flat-sized tier): list price €2249, technical score 63/100.
How we assign awards →The differences that matter
- Capacity: 120 Ah versus 280 Ah → about 1.44 kWh versus 3.584 kWh to draw before recharging.
- Maximum currents: 120 A charging and discharging versus 200 A charging and 350 A discharging → about 1.4 kW versus 4.2 kW on discharge at 12 V.
- Weight and shape: 10.2 kg, 31.5 × 17.5 × 19 cm versus 28 kg, 34.5 × 33 × 14.5 cm → the first is light and narrow, the second wide and low.
- Warranty: 5 years versus 7 years → two more years of cover for the second.
Which one to choose
Choose ECTIVE LC 120 Dual 12V if…
you need a compact, light battery, 10.2 kg and 31.5 × 17.5 × 19 cm, for a small system or to sit beside another one. You accept 120 Ah, about 1.44 kWh, currents of 120 A charging and discharging, about 1.4 kW at 12 V, and a 5-year warranty.
Choose ECTIVE LC 280s LT Underseat if…
the system has heavy loads and you want 280 Ah with 350 A of discharge, about 4.2 kW at 12 V, in a low body, 14.5 cm, made to sit under a seat, with a 7-year warranty. The trade-off is 28 kg and IP21 protection, so a closed, dry compartment.
Where to buy
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