Budget LiFePO4 prices and model names change quickly. That makes a permanent league table less useful than an exact-model buying method.
This comparison is based on manufacturers' published specifications and support information, not Roam Wired laboratory testing. Recheck the linked product page and manual before ordering because sellers can update a product without changing a familiar-looking title.
Size the battery before comparing brands
Use the free electrical calculator to estimate daily energy, inverter demand and the capacity your van actually needs.
The shortlist at a glance
| Brand | What stands out in current documentation | What to verify before buying |
|---|---|---|
| Eco-Worthy | UK storefront, published specifications and app/manual downloads on selected models | Exact low-temperature threshold, seller SKU and whether the selected version includes Bluetooth |
| Vatrer | Model-specific user-guide library including standard and self-heating variants | UK stock, warranty handler and whether the manual matches the listing SKU |
| Enjoybot | Manuals and data sheets separated by capacity and feature set | UK shipping/returns, exact warranty terms and whether the listing is new, clearance or used stock |
| LiTime | Broad range with basic, Bluetooth, heated and trolling variants | Do not transfer features from one 100Ah version to another; confirm local support and return route |
| Fogstar Drift | UK-focused product and support route with heated, Bluetooth-enabled current models | Higher upfront cost and the precise continuous-current requirement for your inverter |
How to compare the exact battery
1. Energy, not just amp-hours
For a nominal 12.8V battery:
energy in watt-hours = nominal voltage x amp-hours
A 12.8V 100Ah battery is nominally 1,280Wh. Usable energy depends on BMS limits, configured reserve, temperature and load. Compare like with like rather than assuming every "100Ah" listing has identical behavior.
2. Continuous BMS current
The BMS continuous-discharge rating must support the inverter's DC input current plus simultaneous DC loads. A 2,000W inverter can demand far more than 100A from a 12V bank, especially after conversion losses and voltage drop. Parallel batteries do not automatically share current perfectly, so use the battery maker's approved configuration and protection guidance.
3. Cold-charge protection
"Low-temperature protection" needs a threshold and behavior. Check whether the BMS blocks charging, whether discharge remains available, whether recovery is automatic and whether a heated version draws energy from the battery or charger.
For example, Eco-Worthy's current UK 12V 100Ah Bluetooth listing publishes low-temperature charge protection, a 100A BMS and 1,280Wh capacity. Those claims apply to that SKU, not every Eco-Worthy battery. See the exact Eco-Worthy product page.
4. Documentation quality
A downloadable manual should state:
- charge-voltage and current limits;
- temperature ranges;
- maximum continuous and surge current;
- permitted series/parallel configurations;
- terminal torque and cable guidance;
- mounting and environmental restrictions;
- storage and maintenance requirements.
Vatrer's user-guide library and Enjoybot's manual library make it possible to compare documentation before purchasing. Confirm the document name matches the exact listing.
5. Warranty route, not headline duration
A long warranty headline is only valuable if you know who handles a claim, where a return must go, what proof is required, who pays freight and which capacity-retention terms apply. Save the product page, invoice, serial number and manual revision at purchase.
Brand-by-brand buying notes
Eco-Worthy
Eco-Worthy's UK storefront is useful for buyers who want local pricing and product documentation. The current 12V 100Ah Bluetooth model publishes 12.8V, 100Ah, a 100A maximum charge/discharge figure, app monitoring and low-temperature charge protection. Verify stock status and exact SKU because similarly named versions can have different displays or connectivity.
Best for: buyers who value a visible UK storefront and can verify the precise listing.
Vatrer
Vatrer publishes separate guides for standard, self-heating and application-specific 100Ah products. That separation is good, but it also shows why a brand-only comparison fails: the feature set depends on the variant.
Best for: buyers prepared to confirm UK fulfillment and match the listing to its manual.
Enjoybot
Enjoybot's official manual library distinguishes standard, Bluetooth and self-heating models. Availability and warranty presentation can vary across new, clearance and used-stock listings, so confirm condition and return terms before comparing the headline price.
Best for: a price-led buyer who has verified the exact seller, condition and support route.
LiTime
LiTime sells several batteries that share the 12V 100Ah label. The base model, Group 24 Bluetooth model and heated variants should be treated as different products. Our LiTime battery review explains that distinction in more detail.
Best for: buyers who want a broad product range and are careful about variant selection.
Fogstar Drift as the UK benchmark
Fogstar is not the cheapest option, but its UK focus, published specifications and current heated/Bluetooth Drift range make it a useful benchmark for deciding whether a budget saving justifies a weaker support route. Read the Fogstar Drift review and compare the exact capacity and BMS current you need.
Our recommendation
Do not choose a winner until you have a one-page requirement sheet containing:
- required usable watt-hours;
- maximum continuous inverter and DC load;
- required charge current from all sources;
- lowest expected battery temperature;
- physical space and restraint method;
- permitted series/parallel layout;
- acceptable warranty and return route.
Then remove every model that fails one requirement. Compare price only among the batteries left.
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Roam Wired turns campervan research into practical plans. We publish transparent guidance, a free electrical design tool and marketplace resources for UK and US van builders.
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