Application solution / mobile power
RV and Marine LiFePO4 Battery Supply for Distributors and Vehicle Builders
Drop-in 12.8 V and 25.6 V packs built for the installation positions lead-acid was never asked to survive — underfloor bays, engine compartments, deck lockers and machinery housings.
- IP64 sealed metal enclosure
- 10-second peak at 2× continuous rating
- Charge blocked below 0 °C by BMS
- OEM label, terminal and packaging
Catalog range
12.8 V and 25.6 V · 50 Ah – 400 Ah · 640 Wh – 7.68 kWh
Who this page is for
Three ways this platform is bought
This is a supply page, not a retail page. Pricing, MOQ and documentation are quoted against the model and volume you specify.
Buyer / 01
Aftermarket distributors
Cover a full capacity ladder from one datasheet family, with consistent charge profiles across the range.
- Standard 12.8 V and 25.6 V lines
- Repeat supply and volume planning
- Catalog, datasheets, compliance files
Buyer / 02
RV, van and boat builders
Batteries specified into a vehicle or vessel at build stage, where enclosure fit and vibration exposure matter more than headline capacity.
- Terminal and connector confirmation
- Enclosure format and mounting
- Fit review against the bay drawing
Buyer / 03
Energy brands going private label
A proven pack platform released under your own brand, with the BMS and options locked before first production.
- Logo, label, colour, packaging
- Bluetooth / display options
- Manual and export documentation
What actually changes
The upgrade is not capacity — it is usable capacity and duty cycle
A 100 Ah lead-acid bank does not deliver 100 Ah. Held to a conservative depth of discharge and derated for Peukert losses at real currents, usable energy is far below nameplate. This is why a like-for-like Ah swap disappoints and a properly sized LiFePO4 pack does not.
| Consideration | Sealed lead-acid | SafeCloud LiFePO4 |
|---|---|---|
| Typical usable DOD | ~50 % | 80 – 90 % |
| Weight at equal usable energy | Baseline | Roughly one third |
| Voltage under load | Sags through discharge | Flat platform to near end |
| Cycle life | 300 – 500 | ≥ 4,000 (conditions stated) |
| Charge below 0 °C | Permitted, degrades | Blocked by BMS by design |
| Enclosure rating | Varies | IP64 on the FT-B series |
Recommended platforms
Platforms specified for mobile and off-grid duty
Start from the mounting position and the peak current, then pick the capacity. Getting that order right prevents most field failures.
Platform / 01
FT-B sealed series — IP64
Metal enclosure rated for dust ingress and splashing water. Three models on one platform: 12.8 V 100 Ah, 12.8 V 200 Ah and 25.6 V 200 Ah.
- 1.28 – 5.12 kWh per unit
- 200 A / 400 A 10-second peak
- ≥ 4,000 cycles
Platform / 02
12.8 V standard range
The volume line for distribution: six capacities sharing one charge profile, with 4S and 4P support for building 24 V and 48 V banks.
- 50 Ah – 400 Ah
- Up to 4S and 4P
- 3-year warranty
Platform / 03
25.6 V standard range
For systems already on a 24 V bus — larger inverters, bow thrusters, winches and higher-draw appliances at lower cable current.
- 50 Ah – 300 Ah
- 1.28 – 7.68 kWh
- 3-year warranty
Engineering decision points
What to settle before the first purchase order
Six questions that decide whether the pack performs in the field. Send us the answers and the quotation comes back configured, not generic.
01
Mounting position and IP rating
Underfloor bays, deck lockers and engine compartments see dust and spray. IP64 covers that; it is not immersion-rated. Specify the actual position, not the vehicle type.
02
Peak current, not nominal
Compressor fridges, windlasses, bow thrusters and inverters draw heavy inrush. Size cable, fusing and busbar against the 10-second peak rating.
03
Cold-climate charging
Charging must not start below 0 °C. Discharge continues to -20 °C. For Nordic, Alpine or Canadian markets, raise self-heating or low-temperature cut-off at quotation stage.
04
Series and parallel topology
Confirm the intended bank layout early. Identical models, matched state of charge and identical cable lengths are prerequisites — mixing capacities or ages in one string is not supported.
05
Alternator and shore charging
A lithium bank changes alternator loading and shore-charger profile. Confirm the charging sources so the BMS window and charger settings match.
06
Terminal and connector format
M6 versus M8, stud orientation and cable lug size are the details that stall an installation. Lock them before sample approval.
Selection guide
Sizing a house bank from the load, not from the old battery
Take daily energy consumption, divide by usable depth of discharge, then check the result against the peak current requirement. The second check is the one most quotations skip.
| Application profile | Typical daily energy | Suggested starting point |
|---|---|---|
| Weekend camper — lights, pump, phone charging | 0.3 – 0.6 kWh | 12.8 V 50 – 100 Ah |
| Full-time van — compressor fridge, laptop, induction occasional | 1.0 – 2.0 kWh | 12.8 V 200 Ah or 2 × 100 Ah |
| Large motorhome — air conditioning on inverter | 2.5 – 4.5 kWh | 25.6 V 200 Ah or 12.8 V 400 Ah |
| Sailing yacht — electronics, autopilot, refrigeration | 1.5 – 3.0 kWh | 12.8 V 200 – 400 Ah |
| Trolling motor — 24 V, several hours daily | 1.5 – 3.5 kWh | 25.6 V 100 – 200 Ah |
| Remote cabin — lighting, pump, small appliances | 1.0 – 2.5 kWh | 25.6 V 200 Ah with solar input |
Starting points only. Send the appliance list, continuous and peak current, ambient temperature range and required autonomy and we will size it against the actual duty cycle.
Compliance for this application
Documentation for aftermarket and vehicle-build supply
Aftermarket distribution and vehicle OEM supply have different documentation burdens. Tell us the destination market and channel and we will confirm which certificates name the exact configuration you are ordering, before you place it.
- UN38.3 Test Summary — required to ship, in every lane
- SDS / MSDS in the destination language
- Dangerous goods packaging documentation for sea freight
- CE Declaration of Conformity for EU placement
- FCC for the US market where applicable
- Model-specific test report naming your exact configuration
OEM / ODM scope
What can be configured for a mobile-power programme
Options are defined before sample production and locked after approval, so every subsequent batch matches the drawing you signed off.
- Voltage, capacity and BMS protection thresholds
- Continuous and peak current rating
- Terminal type, position and cable lug format
- Enclosure format, colour and IP rating
- Bluetooth module, LCD display, low-temperature charge cut-off
- Logo, label, manual, carton and export packaging
Buyer questions
Technical and purchasing questions
Answers here are supply-side. For a project-specific recommendation, send the load profile.
Mechanically and electrically it is close, but three things need checking: the charger or alternator profile must suit lithium, the BMS blocks charging below 0 °C where a lead-acid battery would accept it, and the terminal format must match. Confirm those three and the swap is straightforward.
IP64 covers dust ingress and splashing water from any direction, which suits underfloor bays, deck lockers and engine compartments. It is not immersion-rated. If the position sees standing water or wash-down, tell us and we will advise on enclosure alternatives rather than overstate the rating.
The standard 12.8 V range supports up to four units in series and four in parallel. Send the intended topology at quotation stage — series and parallel limits depend on the BMS build for your order, and we confirm them per configuration rather than publishing a blanket figure.
Discharge continues down to -20 °C. Charging is blocked below 0 °C to prevent lithium plating, which is permanent damage rather than a temporary derate. For cold markets, specify the self-heating option or a low-temperature charge cut-off before sample approval.
It depends on the model, the customisation scope and whether the order is standard or private label. Send the model, target volume and destination market and we will quote MOQ and lead time together rather than in isolation.
We supply the pack-level documentation and dangerous goods packaging for sea freight. Confirm the destination market at quotation so the certificates name the exact configuration — a document that names a similar model will be refused at booking.
Send the load profile, not just the capacity
Appliance list, continuous and peak current, ambient temperature range, mounting position, target market and annual volume. An engineer replies within one business day with a configured quotation.