Vanguard 48V 1,5kWh Commercial Battery Pack (Fi1.5 / Si1.5)
SKU 80105739
Vanguardvanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
The Vanguard 48V 1,5kWh Commercial Battery Pack (Fi1.5 / Si1.5) is a battery pack whose weight is published by the manufacturer in more than one version. Every reading is below, quoted from the source named beside it, with none of them shown as the answer.
Last updated: 24 September 2026
Battery and charging
- Communications bus
- CANJ1939 (29-bit, 500kbps)
- Rated charge cycles
- Up to 1.000 cycles to 80% initial capacity
- Nominal capacity
- 28,4 Ah
- Nominal voltage
- 51,4 V
- Discharge cut-off
- 42,0 V
- Energy as stated
- 1,51 kWh
“Nominal Capacity per IEC 61960 28,4 Ah / 1,51 kWh Communication Protocols CANJ1939 (29-bit, 500kbps)”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
“Charging Temperature Range 0°C to +45°C Marketed Durability Hours/Cycles Up to 1.000 cycles to 80% initial capacity”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
“Cutoff Voltage (V) 42,0 Nominal Capacity per IEC 61960 28,4 Ah / 1,51 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
“Model Number 80105739 Nominal Voltage (V) 51,4”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
“Top Voltage (V) per IEC 61960 58,8 Cutoff Voltage (V) 42,0”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
“Cutoff Voltage (V) 42,0 Nominal Capacity per IEC 61960 28,4 Ah / 1,51 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
Battery care and safety
- Ingress protection
- IP55
- Charge temperature range
- 0°C to +45°C
- Discharge temperature range
- -40°C to +60°C
Source: vanguardpower.com/hs-fs/hubfs/Vanguard/EMEA/Images/Icons/IP55-badge-200x200.png?width=200&height=200&name=IP55-badge-200x200.png
“Discharge Temperature Range -40°C to +60°C Charging Temperature Range 0°C to +45°C”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
“Communication Protocols CANJ1939 (29-bit, 500kbps) Discharge Temperature Range -40°C to +60°C”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
Size and fit
- Weight
- 11,6 kg on the pack's own page; a comparison table says 11,8 kg
11,8 kg
“VANGUARD 48V 1,5kWh1 Fixed Battery Pack - Fi1.5 Lithium-ion integrated Battery Management System Model Number 80105739 [Si1.5 row of the master comparison table] Weight (Kg) 11,8”
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
- Overall dimensions
- Sources disagree
258mm x 136mm x 425mm (Si1.5 configuration)
“Si1.5 row of the master comparison table: Model Number 80105739 ... Dimensions (mm) L x W x H 258 x 136 x 425”
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
256x131x371mm for Fi1.5; the Si1.5 configuration is 258x136x425mm
“Fi1.5 row of the master comparison table: Model Number 80113908 ... Dimensions (mm) L x W x H 256 x 131 x 371”
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
Disputed
“VANGUARD 48V 1,5kWh1 Fixed Battery Pack - Fi1.5 Model Number 80113908 Nominal Voltage (V) 51,4 Top Voltage (V) 58,8 Cut-Off Voltage (V) 42,0 Nominal Capacity / Energy (Ah / kWh) 28,4 / 1,5 Weight (kg) 11,6”
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
The same document also states
Identity
- Model code
- 80105739
80113908 (EU/NA brochures); the website says 80105739
“VANGUARD 48V 1,5kWh Fixed Battery Pack - Fi1.5 Lithium-ion integrated Battery Management System Model Number 80113908”
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
Disputed
“Si Series Name Fi1.5 Model Number 80105739”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
Other sources state
Other findings
- Assembly location
- The Fi1.5 is designed, engineered and assembled in the United States.
- Charge current max
- less than 12 A, 120V 60Hz / 220V 50Hz (charger input)
- Charge time full
- 75 minutes to 100% with the 1425W charger, at nominal temperatures
- Rated discharge current
- 29 A
- Top voltage
- 58,8 V
“provides performance similar to the Si1.5. No maintenance means more time on the jobsite and an overall lower total cost of ownership. The integrated Battery Management System (BMS) constantly monitors and measures the temperature, charge, and voltage of each individual cell bank. The Fi1.5 is designed, engineered and assembled in the United States.”
Source: briggsandstratton.com/hubfs/Website Migration 2025/Briggs/PDFs/Vanguard Batteries Fixed Series.pdf
“Ability to parallel batteries Charge time to 100% with 1425W Charger 1 75 minutes Vanguard Charger Input Power <12A, 120V, 60HZ/220V, 50HZ”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/swappable-battery-packs/si-swappable-commercial-battery-48v-1-5-kwh
“Ability to parallel batteries Charge time to 100% with 1425W Charger 1 75 minutes”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/swappable-battery-packs/si-swappable-commercial-battery-48v-1-5-kwh
“Battery Series Fixed Rated Discharging Current 29A”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
“Nominal Voltage (V) 51,4 Top Voltage (V) per IEC 61960 58,8”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-1-5-kwh-fixed-battery
Carts — none listed
No sourced compatibility evidence is on file for this battery yet.