ECTIVE LC 280s LT Underseat vs LiTime 12V 100Ah OBM Bluetooth
Technical comparison · Lithium batteries for campers
Same voltage, 12 V, but not the same scale: the Underseat offers almost three times the capacity (280 Ah against 100) and far more current, while the OBM weighs 10.24 kg against 28 and has IP65 instead of IP21. The choice is between a large flat reserve and a small light battery.
| Parameter | ||
|---|---|---|
| Awards | — | |
| In brief | ||
| Capacity in kWh | 3.584 kWh | — |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| List price | 2249 € | 499.99 € |
| Weight | 28 kg | 10.24 kg |
| Dimensions (W×D×H) | 34.5 × 33 × 14.5 cm | 33 × 17.2 × 21.6 cm |
| How long it lasts | ||
| Battery life cycles | 2555 cicli | 1825 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | — | 4000 cicli |
| Warranty | 7 anni | 5 anni |
| The numbers | ||
| Cost of stored energy | 0.246 €/kWh | — |
| Energy density | 128 Wh/kg | — |
| Identity | ||
| Use tier | F3 — Flat-sized (3–8 kWh) | F2 — Room-sized (1–3 kWh) |
| Price | ||
| Price | 2249 € | — |
| Category specs | ||
| System voltage | 12 V | 12 V |
| Capacity | 280 Ah | 100 Ah |
| Maximum discharge current | 350 A | 100 A |
| Maximum charge current | 200 A | 100 A |
| Low-temperature charge protection | Yes | Yes |
| Bluetooth monitoring | Yes | Yes |
| Ingress protection | IP21 | IP65 |
JouleSpecs Awards
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 →No awards in this tier.
The differences that matter
- 280 Ah versus 100 Ah, both at 12 V → almost three times the reserve on the Underseat.
- 350 A discharge and 200 A charge versus 100 A and 100 A (manufacturer values) → the Underseat takes much heavier loads and charges faster; the OBM tops out at 100 A.
- 28 kg versus 10.24 kg → nearly 18 kg of difference to install and to count against payload.
- IP21 versus IP65 → the OBM has the higher protection rating; it matters if the compartment can get wet.
Which one to choose
Choose ECTIVE LC 280s LT Underseat if…
you want a single large battery on a 12 V system in a low compartment: 14.5 cm high (34.5 × 33 cm footprint), 280 Ah (3.584 kWh declared), discharge up to 350 A (manufacturer-declared values) and seven years of warranty. You accept 28 kg and IP21 protection, so a compartment not exposed to water.
Choose LiTime 12V 100Ah OBM Bluetooth if…
one 100 Ah battery is enough and weight counts: 10.24 kg, in a space of 33 × 17.2 × 21.6 cm, with IP65 and 4000 declared cycles. You give up much of the reserve and current, 100 A in discharge and charge against 350 A and 200 A, and two years of warranty (five against seven).
Where to buy
Paid link: the price for you does not change.
As an Amazon Associate I earn from qualifying purchases.
The purchase links are the same as on the two product pages and don't influence the verdict. The product pages have the complete data.