Campervan Easter prep the two systems that fail first

TL;DR: Don't Let Your First Trip of 2026 Be a Washout

• Leisure Batteries: Winter storage is the primary cause of lead-acid and AGM battery failure. Test yours under load at least 14 days before departure.
• Water Systems: Frost damage to plastic fittings and stagnant biofilm in pipes are the most common spring issues.
• Tyre Safety: Cold weather causes pressure drops and sidewall cracking; check your date codes for the 5-year replacement recommendation.
• Action: Run a full 'dry run' system cycle now to allow time for parts delivery before the bank holiday rush.

Easter is the traditional 'shakedown' cruise for the UK campervan community. However, after a long, damp British winter, many owners find their first night away ruined by two specific systems that are prone to failure when left idle: the 12V electrical setup and the fresh water plumbing. Whether you are in a bespoke Vanworx or Onyx Vans conversion, or a factory Volkswagen California, these maintenance steps are non-negotiable for 2026.

1. The Leisure Battery: The Heart of Your Off-Grid Comfort

If your leisure battery has been sitting partially discharged over winter, its capacity may have significantly dropped due to sulphation. When this happens, everything becomes a struggle: LED lights flicker, water pumps pulse unevenly, and diesel heater fans may fail to start due to the initial voltage drop required for the glow plug.

How to Prep:

• Voltage Check: A healthy, fully charged lead-acid battery should read around 12.7V to 12.8V. If it drops below 12V quickly under load (e.g., turning on all your lights and the fridge), it likely needs replacing.
• Terminal Care: Check for white powdery corrosion on terminals. Clean them with a wire brush and apply a thin layer of petroleum jelly or terminal grease to prevent further oxidation.
• The 4-Hour Test: Disconnect from the Electric Hook-Up (EHU) and run your usual appliances for four hours. If the voltage plunges below 12.2V, the battery is likely reaching the end of its life.
• Upgrade Path: If your battery is over 4 years old, consider upgrading to a LiFePO4 (Lithium) system. These offer better depth of discharge and are becoming standard in premium models like the Frankia or Kaktus Adventure Vans.

Before buying a new van for the season, use our Campervan Conversion Checker to ensure the electrical installation meets modern safety standards.

2. The Water System: Leaks and Hygiene

Residual water left in the lines over winter can freeze, expanding and cracking plastic elbow joints or the delicate internal housings of Shurflo or Whale pumps. Even if the hardware is intact, stagnant water can harbour biofilm and Legionella bacteria.

How to Prep:

• The Pressure Test: Fill your fresh tank and run every tap (hot and cold) until the air is purged. Turn the taps off and wait. If the pump 'cycles' (turns on briefly) every few minutes without a tap being open, you have a pressure leak.
• Inspect the 'Hidden' Spots: Check under the sink, behind the RCD consumer unit, and near the water heater. A small drip during an Easter frost can lead to a soaked floorboard and mould by May.
• Sterilisation: Use a dedicated tank cleaner (like Puriclean) rather than domestic bleach. Bleach can degrade the seals in your pump and damage stainless steel components found in high-end builds.
• Boiler Check: Ensure your frost protection valve (often a yellow flip-switch or a blue diamond knob) has been reset, or your fresh water will simply dump straight onto the floor.

Easter Readiness Checklist

• [ ] 12V Load Test: Run the system away from EHU for 4 hours to verify capacity.
• [ ] Tyre Inspection: Check pressures and look for 'flat spots' or sidewall cracking. Check the DOT code; tyres over 5-7 years old should be replaced regardless of tread depth.
• [ ] Water Flush: Sterilise the fresh tank and flush through at least 20L of fresh water to remove cleaning agents.
• [ ] Gas Safety: Check the expiry date on your gas regulator and hose. Look for orange hose (LPG) which typically has a 5-year lifespan.
• [ ] Weight Check: If you've added new gear over winter, use our Motorhome Weight Checker to stay within your MTPLM.

Fixing the 'boring' mechanicals now ensures you can focus on the views later. If you find your current setup is no longer fit for purpose, you can browse used campervans to find a model with a more robust winter specification.

Frequently Asked Questions

Why does my pump keep running when the taps are off?

This usually indicates a leak or a failure in the pressure switch. Check all visible joints first. If no leak is found, the internal diaphragm in the pump may have perished or a non-return valve is stuck open due to limescale.

Can I jump-start my campervan from the leisure battery?

Generally, no. Leisure batteries are designed for 'deep cycle' slow release, not the high-cranking amps (CCA) required to start an engine. Attempting this can buckle the internal plates of the leisure battery and blow high-amp fuses or damage the split-charge relay.

How do I know if my water heater is damaged?

If you see water leaking from the external flue vent or from underneath the vehicle when the pump is on, the internal tank may have split due to frost. This is a common issue if the system wasn't fully drained (winterised) in November.