The lithium battery for your Bailey motorhome.
Bailey of Bristol builds a wide range - from the lightweight Adamo and Alora coachbuilts on the Ford Transit to the flagship Autograph on the Peugeot Boxer, and the Endeavour and Endurance campervans for wilder trips. Each model has its own battery location and space constraints, but a TITAN DIN lithium suits the lot, giving you far more usable power without blowing the payload figures.
A Bristol builder, a mixed fleet
Bailey of Bristol has been making leisure vehicles since 1948 and currently runs a deliberately varied lineup. The Adamo and Alora are wide- and narrow-body coachbuilts on the Ford Transit, sized and specified for touring families who care about payload. The Autograph is Bailey's flagship coachbuilt and sits on a Peugeot Boxer with an AL-KO AMC chassis - a very different package to the Ford-based models, with a dedicated twin-battery locker and a heavier GVWR on the upper variants. The Endeavour and Endurance are compact Ford Transit campervans: vans converted rather than coachbuilt, with the battery under the cab seat rather than underfloor.
That spread matters when you are choosing a battery. Battery location, space, payload headroom and charging architecture all vary by model. The good news is that TITAN's flat DIN case was designed precisely for the tight lockers and trays that UK motorhome and campervan builders work with, so a properly measured upgrade is straightforward across the whole Bailey range.
For the base vehicle context, see the Ford Transit guide (Adamo, Alora, Endeavour, Endurance) and the Peugeot Boxer guide (Autograph). The wider picture for motorhome brands and the motorhome battery hub cover the full context.
Sizing by Bailey model family
A starting point for each range. Battery location and available space differ between models - always measure your specific tray, including terminal height, before ordering.
| Model family | Typical use | Good fit |
|---|---|---|
| Adamo (Ford coachbuilt, underfloor)Wide-body, 3,500 kg - XL at 4,250 kg. Shallow tray (~190 mm). Watch payload. | Touring; careful off-grid | 100Ah to 120Ah touring • 150Ah to 180Ah heavier off-grid |
| Alora (lightweight Ford, underfloor)Narrow-body, payload-focused, same underfloor architecture as Adamo. | Touring; payload-sensitive | 100Ah to 120Ah touring • 150Ah to 180Ah heavier off-grid |
| Autograph (Peugeot flagship, twin underfloor)3,500-4,500 kg. Dedicated twin-battery underfloor locker. More headroom on 4,500 kg models. | Touring to full off-grid | 120Ah to 180Ah • up to 230Ah on 4,500 kg models |
| Endeavour / Endurance (Ford campervan, under-seat)Panel van conversion. Endeavour single battery under passenger seat; Endurance twin under cab seats. | Weekender to adventure off-grid | 100Ah to 120Ah touring • 150Ah to 180Ah off-grid |
These are starting points, not guarantees. The underfloor trays on the Adamo and Alora are shallow - approximately 190 mm - so a tall battery can be a tight fit. Measure your specific tray, including clearance for terminals and cables, before ordering. Total your own daily loads in the battery size calculator for the accurate figure.
Where it fits on a Bailey
The battery location varies meaningfully across the Bailey range, and the space available changes with it:
- Adamo and Alora - underfloor floor hatch. Both models store the leisure battery in a sealed compartment under the habitation floor, accessed via a floor hatch. The tray is shallower than a typical van-conversion under-seat void - around 190 mm in most cases - so a tall battery case can be a tight fit. Measure the depth, width and length of your specific tray, including how much clearance you have for the terminals above the battery top, before ordering. The flat DIN profile suits this kind of location well, but the 190 mm limit is real. The Adamo XL variant runs at 4,250 kg, which gives more payload headroom; the standard 3,500 kg Adamo is more sensitive, so every kilogram matters.
- Autograph - dedicated twin underfloor locker. The Autograph's Peugeot Boxer base and AL-KO chassis gives it a proper underfloor battery locker sized for two batteries side by side. Factory spec is two 95Ah AGM batteries (190Ah total). That twin-battery space makes it the roomiest fit in the Bailey range, and the heavier 4,500 kg variants have the payload to match. Swapping to a single larger lithium reclaims space for a charger, DC-DC unit and fusing alongside it.
- Endeavour - under the passenger cab seat. As a Ford Transit panel van conversion, the Endeavour follows the standard van-conversion layout with the leisure battery under the cab seat. The DIN case suits this well, with low-profile terminals to help clear the seat frame above. Swivel bases on some Ford Transit configurations are tight, so measure before assuming.
- Endurance - twin under cab seats. The Endurance runs two 80Ah AGM batteries across both cab seats. Converting to a single lithium gives you equivalent or better usable capacity in one lighter, simpler pack, freeing the other seat void for storage or a charger.
In all cases, confirm your exact available space - including height with terminals in place - before ordering. Tray dimensions vary by model year and trim level, and the figure from a brochure is not always the same as what your specific van has.
Charging on a Bailey
Every current Bailey - coachbuilt or campervan, Ford-based or Peugeot-based - runs a variable-voltage smart alternator. That includes the Adamo, Alora, Endeavour and Endurance on the Ford Transit, and the Autograph on the Peugeot Boxer. Smart alternators do not deliver a steady voltage, so they will not reliably fill a lithium battery on their own. The fix is a DC-DC charger, also called a battery-to-battery charger.
We would fit a Victron Orion every time. It takes whatever variable voltage the smart alternator puts out, regulates it into a clean lithium-compatible charge, and protects the starter battery in the process. A split-charge relay does work technically, but it is not the most reliable approach for lithium, and some relays cause a backfeed that quietly skims around the top 15% off your usable capacity. Feeding straight off the alternator with no relay and no DC-DC is not something we recommend on any of these vehicles.
On mains hook-up, any charger set to a lithium profile charges correctly. Check your existing unit against the compatibility list - some older lead-acid chargers need a profile change or replacement. For roof solar, plan the panel size around the gap your other charging sources leave, using the solar guide. Every TITAN carries a custom BMS, charges safely down to -30C, and comes with a lifetime, fully transferable warranty.