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Fitment for your cart

Lithium kits that fit the Yamaha UMAX AC (One, Two, Rally, Bistro) 2018 and newer (lead-acid)

0 kits are confirmed by their brand for this cart and 17 more fit by size (they need a hold-down). 10 48V kits are too big for this bay or ruled out by their brand — we list them below with the reason. Every verdict shows how we reached it and links to its source. Checked October 25, 2026.

Your cart's details
Voltage
48V
Factory batteries
Eight 6V Trojan T-105 (Yamaha spec page)
Charging
No OBC documented — Delta-Q charger
Charge port
Not confirmed
  • Not the Drive2 battery layout: Fleet Lithium sells separate UMAX brackets (one for the UMAX, one for the UMAX Two).
  • RoyPow: "a 160Ah+ pack is the practical choice here, not 105Ah" because of the workload.
  • The UMAX Li (from 2023) already has a factory RoyPow lithium battery.
  • Sources disagree: Battery set: eight 6V T-105 (Yamaha 2027 spec page, Fleet Lithium) vs six 8V T-875 (Small Vehicle Resource, 2020 UMAX Two AC).

Our three picks

Best kits for the Yamaha UMAX AC (One, Two, Rally, Bistro)

We may earn a commission when you buy through our links. Rankings never change with commissions. How we make money

Best overall
Epoch Batteries 48V 105Ah MINI kit (Club Car DS)

Epoch Batteries48V 105Ah MINI kit (Club Car DS)

Fits by size — add a hold-down

The highest score among kits the brand lists for this cart.

$2,29988/100
Check price on official site →

Before you buy

Converting the Yamaha UMAX AC (One, Two, Rally, Bistro) (2018 and newer (lead-acid)): what's different

Yamaha's UMAX (from 2018) is a utility and campus cart built from Drive2 design elements, but with its own battery layout and brackets. It works hard, so RoyPow says a 160Ah-plus pack is "the practical choice" rather than 105Ah.

How to tell it's this one

  • Eight 6-volt Trojan T-105 batteries per Yamaha (some listings say six 8V).
  • UMAX One, Two, Rally or Bistro, 2018 and newer.
  • Delta-Q charger; the UMAX Li (from 2023) already has a factory RoyPow lithium pack.

The battery bay

Not the Drive2 tray: Fleet Lithium sells separate UMAX and UMAX Two brackets, with its 14.3 × 12.24 in and 22 × 12 in packs. No measurement is published.

Controller and charging

  • 48V AC drive with a Toyota-built controller rated 350A — choose 200A continuous or more.
  • AC drives use regenerative braking: pick a pack whose BMS accepts it.

What owners get wrong

  • If it's a UMAX Li, you already have lithium.
  • Size for the workload: 150–160Ah+ for hauling.
  • Ask for the bracket for your exact model (UMAX vs UMAX Two).

Sources: Yamaha UMAX specs · Fleet Lithium UMAX kit · Yamaha lithium conversion guide (RoyPow)

Every kit, checked against your cart

All 18 kits, best fit first

“Brand lists this cart”: the brand's own finder, chart or product page names it. “Fits by size”: the pack is no larger than one documented to fit this cart (or than the measured bay) and no taller than the stock batteries. How we decide.

  1. Epoch Batteries 48V 105Ah MINI kit (Club Car DS)

    Fits by size — add a hold-down At 15.8" × 11.1" × 10.9", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. Epoch Batteries doesn't list this cart, so plan a hold-down bracket. Source

    Epoch Batteries 48V 105Ah MINI kit (Club Car DS): 5.4 kWh · 200 A · 11 years* warranty

    88 $2,299 Official site →

  2. Vatrer 48V 150Ah high-capacity kit

    Fits by size — add a hold-down At 22" × 12.1" × 11", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. Vatrer doesn't list this cart, so plan a hold-down bracket. Source

    Vatrer 48V 150Ah high-capacity kit: 7.7 kWh · 200 A · 10 years warranty

    88 $2,100 Official site →

  3. Vatrer 48V 105Ah Mini kit

    Fits by size — add a hold-down At 13.2" × 12.2" × 10", it is no larger in footprint than the Fleet Lithium 105Ah Yamaha UMAX pack (14.3" × 12.24" × 10.94"), documented to fit this cart, and no taller than the stock batteries. Vatrer doesn't list this cart, so plan a hold-down bracket. Source

    Vatrer 48V 105Ah Mini kit: 5.4 kWh · 200 A · 10 years warranty

    83 $1,580 Official site →

  4. Cloudenergy 48V 105Ah kit (250A)

    Fits by size — add a hold-down At 20.6" × 10.6" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. Cloudenergy doesn't list this cart, so plan a hold-down bracket. Source

    Cloudenergy 48V 105Ah kit (250A): 5.4 kWh · 250 A · 5 years warranty

    75 See price on Amazon Amazon →

  5. WattCycle V2 48V 105Ah 250A kit

    Fits by size — add a hold-down At 20.5" × 9.4" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. WattCycle doesn't list this cart, so plan a hold-down bracket. Source

    WattCycle V2 48V 105Ah 250A kit: 5.4 kWh · 250 A · 5 years, 7 with registration warranty

    75 $1,650 Official site →

  6. Dakota Lithium 48V 105Ah Dakota Tough

    Fits by size — add a hold-down At 20.5" × 10.8" × 9.6", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. Dakota Lithium doesn't list this cart, so plan a hold-down bracket. Source

    Dakota Lithium 48V 105Ah Dakota Tough: 5.4 kWh · 200 A · 11 years warranty · battery only

    73 $2,699 Official site →

  7. DC House 48V 100Ah metal case + charger

    Fits by size — add a hold-down At 20.3" × 11.1" × 9.6", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. DC House doesn't list this cart, so plan a hold-down bracket. Source

    DC House 48V 100Ah metal case + charger: 5.1 kWh · 200 A · 5 years warranty

    70 $880 Official site → Amazon

  8. DC House SENTRY G100 48V 100Ah (UL 2580) + charger

    Fits by size — add a hold-down At 20.5" × 11.9" × 9.8", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. DC House doesn't list this cart, so plan a hold-down bracket. Source

    DC House SENTRY G100 48V 100Ah (UL 2580) + charger: 5.1 kWh · 200 A · 5 years warranty

    70 $1,200 Official site →

  9. OGRPHY 48V 100Ah kit

    Fits by size — add a hold-down At 20.4" × 10.6" × 8.6", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. OGRPHY doesn't list this cart, so plan a hold-down bracket. Source

    OGRPHY 48V 100Ah kit: 5.1 kWh · 200 A · 5 years warranty

    66 See price on Amazon Amazon →

  10. LiTime 48V 100Ah GC smart kit

    Fits by size — add a hold-down At 20.5" × 10.6" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. LiTime doesn't list this cart, so plan a hold-down bracket. Source Power: the stock controller can draw up to 350A; this pack is rated 100A continuous, so expect it to cut out on steep hills or with a heavy load.

    LiTime 48V 100Ah GC smart kit: 5.1 kWh · 100 A · 5 years warranty

    58 $1,282 Official site → Amazon

  11. Redodo 48V 100Ah Bluetooth conversion kit

    Fits by size — add a hold-down At 20.5" × 10.6" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. Redodo doesn't list this cart, so plan a hold-down bracket. Source Power: the stock controller can draw up to 350A; this pack is rated 100A continuous, so expect it to cut out on steep hills or with a heavy load.

    Redodo 48V 100Ah Bluetooth conversion kit: 5.1 kWh · 100 A · 5 years warranty

    58 $1,150 Official site → Amazon

  12. Power Queen 48V 100Ah GC8 + charger + monitor

    Fits by size — add a hold-down At 20.5" × 10.6" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. Power Queen doesn't list this cart, so plan a hold-down bracket. Source Power: the stock controller can draw up to 350A; this pack is rated 100A continuous, so expect it to cut out on steep hills or with a heavy load.

    Power Queen 48V 100Ah GC8 + charger + monitor: 5.1 kWh · 100 A · 5 years warranty

    58 $1,150 Official site →

  13. CHINS 48V 100Ah kit

    Fits by size — add a hold-down At 20.5" × 10.6" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. CHINS doesn't list this cart, so plan a hold-down bracket. Source

    CHINS 48V 100Ah kit: 5.1 kWh · 200 A · 1 year warranty

    58 See price on Amazon Amazon →

  14. LiTime 48V 60Ah battery

    Fits by size — add a hold-down At 20.6" × 9.3" × 8.6", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. LiTime doesn't list this cart, so plan a hold-down bracket. Source Power: the stock controller can draw up to 350A; this pack is rated 120A continuous, so expect it to cut out on steep hills or with a heavy load.

    LiTime 48V 60Ah battery: 3.1 kWh · 120 A · 5 years warranty · battery only

    28 $800 Official site →

  15. Allied Lithium RS Commercial 48V 105Ah

    Fits by size — add a hold-down At 17.5" × 10.8" × 9", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. Allied Lithium doesn't list this cart, so plan a hold-down bracket. Source

    Allied Lithium RS Commercial 48V 105Ah: 5.4 kWh · current n/a · 10 years warranty

    — $2,700 Official site →

  16. TEMGO 48V 100Ah kit

    Fits by size — add a hold-down At 20.7" × 10.6" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. TEMGO doesn't list this cart, so plan a hold-down bracket. Source

    TEMGO 48V 100Ah kit: 5.1 kWh · 200 A · 1 year warranty

    — See price on Amazon Amazon →

  17. LOSSIGY 48V 100Ah kit

    Fits by size — add a hold-down At 20.5" × 10.6" × 8.7", it is no larger in footprint than the Fleet Lithium 168Ah Yamaha UMAX pack (22" × 12" × 10.6"), documented to fit this cart, and no taller than the stock batteries. LOSSIGY doesn't list this cart, so plan a hold-down bracket. Source

    LOSSIGY 48V 100Ah kit: 5.1 kWh · current n/a · 5 years warranty

    — See price on Amazon Amazon →

  18. RELiON InSight 48V Two Battery Bundle

    Not confirmed — measure your tray RELiON doesn't list this cart and we have no measurement to rule on — measure your tray against the pack size on the brand page.

    RELiON InSight 48V Two Battery Bundle: 3.1 kWh · current n/a · 10 years warranty

    — $2,815 Official site →
10 48V kits that won't fit the Yamaha UMAX AC (One, Two, Rally, Bistro), 2018 and newer (lead-acid) — and why
  • Vatrer 48V 105Ah conversion kit — At 19.7" × 12.5" × 9.6", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • Epoch Batteries 48V 105Ah Big Box complete kit — At 18.1" × 13.4" × 9.8", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • RoyPow S51105L-Z 48V 105Ah — At 18.1" × 13.2" × 9.1", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • Vatrer 48V 105Ah self-heating kit — At 19.7" × 12.5" × 9.6", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • LiTime 48V 150Ah battery (300A) — At 20" × 13" × 10.5", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • Epoch Batteries 48V 65Ah Big Box complete kit — At 17.2" × 14.3" × 7.5", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • Epoch Batteries 48V 150Ah Big Box complete kit — At 19.8" × 15.4" × 9.8", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • Epoch Batteries 48V 230Ah Big Box complete kit — At 23.5" × 14.4" × 9.9", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • DC House 48V 50Ah metal case + charger — At 18.1" × 13.1" × 4.9", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source
  • BigBattery 48V HUSKY 2 PWR Essential Golf Cart Kit — At 18.1" × 12.6" × 9.8", it doesn't fit within any pack documented to fit this cart: it is wider than the largest one (Fleet Lithium 168Ah Yamaha UMAX pack, 22" × 12" × 10.6"). Without modifying the tray, we don't count it as a fit. Source

Beyond the battery

What else you'll need for the Yamaha UMAX AC (One, Two, Rally, Bistro) (2018 and newer (lead-acid))

The parts owners most often forget — and that cause most "my cart won't move" problems.

A 48V lithium chargerIf your kit doesn't include one. Never reuse the lead-acid charger.A 48V-to-12V converterFor lights, horn and USB — many kits leave it out.A proper hold-downOne pack in a six-battery tray must not slide.The right charge plugYour receptacle may not match the new charger.

Yamaha UMAX AC (One, Two, Rally, Bistro) (2018 and newer (lead-acid)) lithium conversion: questions people ask

How much does it cost to convert a Yamaha UMAX AC (One, Two, Rally, Bistro) to lithium?

In our database, kits that fit the Yamaha UMAX AC (One, Two, Rally, Bistro) are listed between $800 and $2,700 on the brands' own sites (checked October 25, 2026). Add a 48V-to-12V converter if the kit doesn't include one, a charge plug that matches your receptacle, and installation if you don't do it yourself.

What is the best lithium battery kit for the Yamaha UMAX AC (One, Two, Rally, Bistro)?

For the Yamaha UMAX AC (One, Two, Rally, Bistro), among kits the brand lists for this cart, the Epoch Batteries 48V 105Ah MINI kit (Club Car DS) has our highest score. The best choice still depends on your budget and terrain — see our three picks above.

Will a "universal" lithium battery fit my Yamaha UMAX AC (One, Two, Rally, Bistro)?

On the Yamaha UMAX AC (One, Two, Rally, Bistro), usually, if the tray is big enough and you have a hold-down bracket. Measure length, width and height first and compare them with the kit size on each card.

Do I need a new charger for a lithium Yamaha UMAX AC (One, Two, Rally, Bistro)?

Yes. A lithium Yamaha UMAX AC (One, Two, Rally, Bistro) can't use its lead-acid charger, which has the wrong charging profile: you need a 58.4V lithium charger, which most kits include (check the card). This cart: no OBC documented — Delta-Q charger.

Step by step, with the parts list: how to convert a golf cart to lithium · what it costs.

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