Real tech. Real support. Real results. Trusted by professionals nationwide.

Summer Sales Event
10% OFF

Storewide on every golf cart, marine, RV & solar battery

Ends tonight Shop the Sale
Drop-in conversion kits

OE Lithium Conversion Kits

Complete lead-acid to lithium conversions built for one specific cart. Every kit ships with the pack, the OE-fit bracket, the harness, the matched charger and the BMS already paired — no fabrication, no guesswork, no parts list to assemble yourself.

  • Everything in one box — pack, bracket, harness, charger
  • Built to OE mounting points for your exact make and model
  • 36V, 48V and 72V systems
  • 10-year Promise series warranty, ships from the USA
1 Box, complete conversion
300A Continuous discharge
10 yr Promise series warranty
Drop in Lithium Conversion Kits
48V Most popular kit
  • Complete kit, no extra parts
  • OE bracket fitment
  • Matched lithium charger
  • US-based support
  • Ships from the USA
1

Confirm your vehicle

Pick your make, model and year in the fitment finder. We only show kits with brackets verified for that build.

2

Pick your voltage and range

Stay with your cart's system voltage, then size the pack to how far you actually drive. Most owners land on 105Ah.

3

Install in an afternoon

The bracket, harness, charger and BMS arrive pre-matched. Most conversions take a few hours with hand tools.

View as

Verified fitment

Which kit fits my vehicle?

Pick your make, model and year. We show only the kits with brackets and harnesses confirmed for that build — and tell you plainly when something does not fit.

  • EZGO
  • Club Car
  • Yamaha
  • Icon
  • Advanced EV
  • Textron
  • Polaris

Vehicle not listed? Send us the model and year and our team will confirm the right kit before you order.

Buyer questions

Conversion kit FAQ

What comes in a conversion kit?
Every kit ships complete: the LiFePO4 pack, the OE-fit mounting bracket, the wiring harness, a matched lithium charger and the integrated BMS. You do not need to source anything else to finish the conversion.
Do I need to change my controller?
Most drop-in conversions run fine on the factory controller. If your build needs a controller change or a DC-DC converter for the accessory circuit, it is called out on that kit's product page before you buy.
Will it bolt to my existing battery tray?
Yes — kits are built to the OE mounting points for the make, model and year listed. Use the fitment finder on this page to confirm your exact build.
How long does the install take?
Most conversions take an afternoon with hand tools. There is no fabrication and no custom wiring; the harness and bracket are pre-matched to the vehicle.
Can I reuse my old charger?
No. Lead-acid chargers do not follow a lithium charge profile and will not charge the pack to spec. A matched Fleet Lithium charger is included in every kit.
What warranty comes with a kit?
Promise series packs carry a 10-year warranty with 5,000+ cycles at 80% depth of discharge, plus US-based support. Every kit ships from our US warehouse.
Talk to a fitment specialist