Bolt Energy USA 51.2 Volt 105AH (thin)

SKU 33-114

boltenergyusa.com/product/105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium

The Bolt Energy USA 51.2 Volt 105AH (thin) is a battery pack with a nominal voltage of 51.2 V, a nominal capacity of 105 Ah, 5,376Wh of energy, a continuous discharge of 250 A, a reserve capacity of 252 minutes at 25 A and a weight of 103 lb.

Last updated: 27 October 2026

What we found

Documented by its manufacturer to fit the carts listed below across several brands.
Specifications are published for it, each with its source, 5 of them corroborated by a second source.
3 figures are contradicted by another credible source. Both readings are shown below, and neither is presented as the correct one.

Battery and charging

Working voltage range: 43.2 - 58.4V
Voltage range the maker recommends: 48.0V - 57.0V
Maximum charge current: 350A
Permitted charger: Only Bolt's own charger
Round-trip efficiency: 0.99
Rated charge cycles: 2500 cycles at 1C, or 4000 at 0.2C
Case material: Powder Coated Steel
Cell arrangement: 16 cells in series
Reserve capacity: 252 minutes at 25 A
Energy stated by the maker: 5,376Wh
Nominal capacity: 105 Ah
Nominal voltage: 51.2 V
Cell chemistry: Prismatic- LiFePO4
Continuous discharge: 250 A
Peak discharge: 520A ± 15.6A (30S)
105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium · retrieved 15 September 2026
“Peak Discharge Current 520A ± 15.6A (30S)”
Source: boltenergyusa.com/product/105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium
500 A for 30 seconds
BE10551T-Universal-Installation-Instruction.pdf · retrieved 16 September 2026
“8 Peak discharge current 500A(30 Secs) 9 Total weight 103 LBS”
Source: boltenergyusa.com/wp-content/uploads/2026/03/BE10551T-Universal-Installation-Instruction.pdf
Recommended charge current: 5 - 52A
105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium · retrieved 15 September 2026
“Recommended Charge Current 5 - 52A”
Source: boltenergyusa.com/product/105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium
100 A normal charge
BE10551T-Universal-Installation-Instruction.pdf · retrieved 16 September 2026
“5 Charge current Normal 100A Max 375A 6 Cut-off voltage 40V”
Source: boltenergyusa.com/wp-content/uploads/2026/03/BE10551T-Universal-Installation-Instruction.pdf
Discharge cut-off: 40 V
Charge cut-off: 58.5V
Maximum in parallel: Two, at most

Battery care and safety

Self-discharge rate: 3% a month or less
Where the BMS cuts out on current: 260 A ± 7.8 A (50S) 520A ± 15.6A (30S)
Where the BMS cuts out on charge current: 375A
Voltage charging resumes at: <58.5V
Storage temperature: 50 to 113 °F, at 75% humidity or less
What the battery management system guards against: Overcharge, over-discharge, over-current and over-temperature
Charge temperature range: 34°F to 140°F (0-60°C)
105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium · retrieved 15 September 2026
“Charging Temp. Range 34°F to 140°F (0-60°C)”
Source: boltenergyusa.com/product/105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium
30 to 140 °F
BE10551T-Universal-Installation-Instruction.pdf · retrieved 16 September 2026
“11 Charge method Charge 30 - 140°F Discharge -4 - 140°F”
Source: boltenergyusa.com/wp-content/uploads/2026/03/BE10551T-Universal-Installation-Instruction.pdf
Discharge temperature range: −4 to 140 °F

Size and fit

Overall dimensions: 20.00 × 8.46 × 10.98 in
Stated weight: 103 lb
Terminal torque: 132 in-lb, and no more

Compatibility

What the CAN port is for: CAN port for testing battery

Frame and components

Enclosure rating: Designed with IP66 standard

Identity

Model code: BE10551T

Other findings

Bluetooth: Bluetooth receiver
Capacity retained at temperature: At least 70% of capacity at −4 °F, 90% at freezing
Charge storage retention: At least 97% left after a month in storage
Charging method: Constant current, then constant voltage
Internal impedance: 50 mΩ or less, at 50% charge
Manufacturer denies series connection: Never in series — it voids the warranty
Standard charge voltage: 58.4 V
Storage state of charge: Half to two-thirds charged, topped up every six months

Compatible carts

Only as Bolt's own compatibility search answers it for the EZ GO Express, which Bolt name as a model rather than by this trim — check yours before buying. — applies to E-Z-GO Express L6, E-Z-GO Express S2, E-Z-GO Express S4, E-Z-GO Express S6

Sources do not establish: Tray fit and wiring as installed. Bolt's search answers by make and model; their kits ship with cart-specific harnesses, and which harness a particular cart takes is the kit's own question.

Applies to E-Z-GO Express L6, E-Z-GO Express S2, E-Z-GO Express S4, E-Z-GO Express S6

Source: boltenergyusa.com/bolt-cart-compatibility-search

E-Z-GO Express L6Manufacturer documentedView cart: E-Z-GO Express L6 →View battery: E-Z-GO Express L6 →
E-Z-GO Express S2Manufacturer documentedView cart: E-Z-GO Express S2 →View battery: E-Z-GO Express S2 →
E-Z-GO Express S4Manufacturer documentedView cart: E-Z-GO Express S4 →View battery: E-Z-GO Express S4 →
E-Z-GO Express S6Manufacturer documentedView cart: E-Z-GO Express S6 →View battery: E-Z-GO Express S6 →
E-Z-GO TXTManufacturer documentedView cart: E-Z-GO TXT →View battery: E-Z-GO TXT →
Sources do not establish: Bolt's search answers only "Compatible" for this kit. Bolt's own fitment guide lists a cart-specific harness and firmware for the kits it covers on this cart, and does not say whether this kit needs them.
Yamaha Golf Car G22E G-MAXManufacturer documentedView cart: Yamaha Golf Car G22E G-MAX →View battery: Yamaha Golf Car G22E G-MAX →

Sources

Bolt Energy USA — 51.2 Volt 105AH (thin)Manufacturer battery page
Bolt Energy USA
Source: boltenergyusa.com/product/105ah-51-volt-standard-kit-be10551t-thin-high-output-lithium
Retrieved September 15, 2026
Bolt Energy USA — Cart Compatibility SearchManufacturer document
Bolt Energy USA
Source: boltenergyusa.com/bolt-cart-compatibility-search
Retrieved September 16, 2026
Bolt Energy USA — BE 10551T Universal Installation InstructionManufacturer document
Bolt Energy USA
Source: boltenergyusa.com/wp-content/uploads/2026/03/BE10551T-Universal-Installation-Instruction.pdf
Retrieved September 16, 2026