Quick answer: Winterizing a golf cart means four things: charge the battery correctly for its chemistry (100% and 70%+ maintained for lead-acid per Crown Battery, though lithium makers disagree among themselves — RELiON and Vatrer say 40-60%, Trojan’s own lithium guidance says 100%), inflate tires to spec to prevent flat-spotting, clean and dry the cart to stop rust before it starts, and rodent-proof the storage space since chewed wiring is a real and common cause of spring no-starts. A cart parked correctly in fall needs almost no work to wake up in spring; one that isn’t often needs a new battery, a repaired wiring harness, or both.
Pre-winter checklist at a glance
| Task | Target | Why it matters |
|---|---|---|
| Lead-acid battery charge | 100% before storage, 70%+ maintained | Sulfation from sitting discharged permanently cuts capacity |
| Lithium battery charge | 40-60% (most makers) or per-brand spec | Full charge for months can accelerate cell degradation on most packs |
| Tire pressure | Per owner's manual, checked before storage | Prevents flat-spotting from sitting stationary for months |
| Cleaning | Rinse, then fully air-dry before covering | Trapped moisture under a cover is what starts rust, not the rain itself |
| Rodent-proofing | Repellent pouches or wire spray before storage | Chewed wiring insulation is a real, common cause of spring no-starts |
Step 1: get the battery charge level right for its chemistry
This is the step most owners get wrong, because lead-acid and lithium don’t follow the same rule — and even lithium sources disagree with each other. For flooded lead-acid packs, Crown Battery’s own winter-prep guidance is clear: charge to 100% before storage, then check periodically and keep the pack at or above 70% state of charge for the whole off-season. A lead-acid battery left sitting discharged sulfates — hard crystals form on the plates — which permanently reduces how much charge it can hold, even after you recharge it in spring.
Lithium LiFePO4 is murkier. Most battery makers, including RELiON and Vatrer, recommend storing lithium at 40-60% charge rather than full, because holding cells at 100% for months of inactivity can accelerate chemical degradation. But Trojan’s own 2025 guidance for its lithium golf cart packs recommends the opposite: maintain 100% charge throughout storage and check the level monthly via its app. We’re flagging that disagreement directly rather than picking a side — if you have a branded lithium pack, follow that manufacturer’s specific storage number over generic third-party advice, since the packs themselves aren’t identical. See our lithium golf cart battery guide if you’re considering the upgrade, or our full battery maintenance checklist for the watering and terminal-cleaning routine that applies to lead-acid packs year-round, not just before storage.
Either chemistry benefits from a smart maintainer left connected through the off-season rather than a one-time charge-and-forget — see our best golf cart charger guide for models that handle both lead-acid and lithium profiles. If you’re not using a maintainer, disconnect the negative cable instead; Crown Battery notes this stops the cart’s lights, gauges, and other onboard electronics from slowly draining a pack that was correctly charged going in.
Step 2: check tire pressure before the cart sits still
Tires lose pressure gradually even when the cart isn’t moving, and a low tire that sits in the same spot for months is more likely to develop a flat-spotted section than one topped off correctly. Check pressure against your owner’s manual spec before storage begins, not after you notice a soft tire in spring. If a tire is already worn or cracked heading into the off-season, it’s cheaper to replace it in fall than to discover the problem the first time you drive on it next year — see our best golf cart tires guide for sizing and tread options.
Step 3: clean and dry the cart completely before covering it
Rinse off grime, dust, and any acid residue near the battery bay, then let the cart air-dry completely before putting a cover on. This step matters more than it sounds like: a cover trapping moisture against the body and frame is what actually starts rust over winter, not rain hitting an uncovered cart directly. Lubricate steering and suspension pivot points while you’re at it, since cold temperatures stiffen grease and a dry joint is more likely to bind or squeak once the cart comes back out in spring. Once it’s clean and dry, a properly fitted waterproof cover is the standard finish — see our golf cart cover guide for sizing by seat count and lift height.
Step 4: rodent-proof the storage space
Fresh Cab Botanical Rodent Repellent Pouches
- Balsam fir oil-based scent pouches, the only EPA-registered bio-pesticide rodent repellent for enclosed spaces per the manufacturer.
- Each pouch lasts up to 30 days in open airflow, or up to 90 days in a sealed, low-airflow space like a covered cart's battery bay.
- Non-toxic and doesn't kill rodents — it makes the treated space unpleasant enough that they nest elsewhere instead.
Keep the project moving — pouches like these ship in two days with a free 30-day Amazon Prime trial, useful when storage season starts before an order can afford to sit in transit.
This is the step most winterizing checklists skip entirely, but it’s a real failure mode: a cart sitting motionless in a garage or shed for months is exactly the undisturbed environment mice and rats look for to nest in, and chewed insulation on a battery cable or wiring harness can produce the same no-start symptoms covered in our golf cart won’t start guide — except this time the fix is a wiring repair, not a battery or solenoid swap. Peppermint-oil sprays work too, but they evaporate in 3-5 days and need weekly reapplication to stay effective, which most owners forget to do across a whole winter; a pouch-based repellent is the lower-maintenance option for a cart that won’t be checked on often.
The bottom line
Get the battery charge level right for its chemistry (100%/70%+ maintained for lead-acid, 40-60% for most lithium packs — check your specific brand since Trojan’s own guidance breaks from that norm), top off tire pressure, clean and fully dry the cart before covering it, and add rodent-proofing before the cart goes untouched for months. None of these steps cost much or take long in fall, and skipping any one of them is how a $40 pouch pack or a $130 smart maintainer turns into a battery replacement, a wiring repair, or both once spring driving season starts.