ECTIVE LC 120 Dual 12V vs ECTIVE LC 320s LT Underseat
Technical comparison · Lithium batteries for campers
These are two sizes rather than two versions of the same job: a light, compact 12 V battery at 120 Ah, and a 320 Ah one with 4.096 kWh declared by the manufacturer. The choice is how much energy you really need and how much weight you can carry.
| Parameter | ||
|---|---|---|
| In brief | ||
| Capacity in kWh | — | 4.096 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| List price | 839 € | 2489 € |
| Weight | 10.2 kg | 32 kg |
| Dimensions (W×D×H) | 31.5 × 17.5 × 19 cm | 35.5 × 22.4 × 19 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 | 6800 cicli |
| Warranty | 5 anni | 7 anni |
| The numbers | ||
| Cost of stored energy | — | 0.238 €/kWh |
| Energy density | — | 128 Wh/kg |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | 839 € | 2489 € |
| Category specs | ||
| System voltage | 12 V | 12 V |
| Capacity | 120 Ah | 320 Ah |
| Maximum discharge current | 120 A | 200 A |
| Maximum charge current | 120 A | 200 A |
| Low-temperature charge protection | Yes | Yes |
| Bluetooth monitoring | — | Yes |
| Ingress protection | — | IP21 |
The differences that matter
- Capacity, 120 Ah vs 320 Ah → the second lists 4.096 kWh; the first holds a little over a third of that.
- Maximum current, 120 A vs 200 A → the second can feed heavier loads on discharge and accepts faster charging.
- Weight, 10.2 kg vs 32 kg → the second needs a mount designed for over 30 kg.
- Warranty, 5 years vs 7 years → it is the limit that runs out first on both; the declared cycles (2,000 vs 6,800) matter less than the years.
Which one to choose
Choose ECTIVE LC 120 Dual 12V if…
your system is small and weight is a constraint: it fits 31.5 × 17.5 × 19 cm and already has cold-charge protection. The trade-off: with a single battery you get a little over a third of the other's energy, and the declared lifespan is shorter.
Choose ECTIVE LC 320s LT Underseat if…
the battery is the heart of the system and has to last more years: it has Bluetooth, is designed to sit under a seat (35.5 × 22.4 × 19 cm) and declares 4.096 kWh. The trade-off: it weighs over three times as much as the other and has to be secured accordingly.
Where to buy
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