Vanguard 48V 3,5kWh Fixed Commercial Battery Pack (Fi3.5)
SKU 80110583
Vanguardvanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
The Vanguard 48V 3,5kWh Fixed Commercial Battery Pack (Fi3.5) is a battery pack with a nominal voltage of 51,6 V, 3,5 kWh of energy, a weight of 26,3 kg, an ingress rating of IP56 and dimensions of 482mm x 272mm x 266mm.
Last updated: 2 November 2026
Battery and charging
- Continuous discharge current
- 67
- Communications bus
- CANJ1939 (29-bit, 500kbps)
- Charging time, stated for the machine
- 4 hours
- Rated charge cycles
- Up to 2.000 cycles to 80% initial capacity
- Nominal capacity
- Sources disagree
67,5 Ah
“Cutoff Voltage (V) 35,0 Nominal Capacity per IEC 61960 67,5 Ah / 3,5 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
67,5 Ah / 3,5 kWh
Row from the maker’s page: “Nominal Capacity per IEC 61960” | “67,5 Ah / 3,5 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
- Nominal voltage
- 51,6 V
- Discharge cut-off
- 35,0 V
- Maximum in parallel
- 10
- Stated energy
- 3,5 kWh
Row from the maker’s page: “Discharging Current, Nominal” | “67”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Row from the maker’s page: “Communication Protocols” | “CANJ1939 (29-bit, 500kbps)”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Row from the maker’s page: “Standard Charge Time” | “4 hours”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Row from the maker’s page: “Marketed Durability Hours/Cycles” | “Up to 2.000 cycles to 80% initial capacity”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Row from the maker’s page: “Nominal Voltage (V)” | “51,6”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Row from the maker’s page: “Cutoff Voltage (V)” | “35,0”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
“Parallel Capable Yes, up to 10 batteries”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
“Cutoff Voltage (V) 35,0 Nominal Capacity per IEC 61960 67,5 Ah / 3,5 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Battery care and safety
- Temperatures to charge the battery in
- 0°C to +45°C
- Ingress protection
- IP56
- Charge temperature range
- 0°C to +45°C
- Discharge temperature range
- -20°C to +60°C
Row from the maker’s page: “Charging Temperature Range” | “0°C to +45°C”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
“IP56”
Source: vanguardpower.com/hs-fs/hubfs/Vanguard/EMEA/Images/Icons/IP56-badge-200x200.png?width=200&height=200&name=IP56-badge-200x200.png
“Discharge Temperature Range -20°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-3-5kwh-fixed-battery
Row from the maker’s page: “Discharge Temperature Range” | “-20°C to +60°C”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Size and fit
- Weight
- 26,3 kg
- Overall dimensions
- 482mm x 272mm x 266mm
“VANGUARD 48V 3,5kWh1 Fixed Battery Pack - Fi3.5 Model Number 80110583 Nominal Voltage (V) 51,6 Top Voltage (V) 58,8 Cut-Off Voltage (V) 35,0 Nominal Capacity / Energy (Ah / kWh) 67,5 / 3,5 Weight (kg) 26,3”
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
“VANGUARD 48V 3,5kWh1 Fixed Battery Pack - Fi3.5 ... Dimensions L x W x H (mm) 482 x 272 x 266”
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
Identity
- Model code
- Sources disagree
80110583
Row from the maker’s page: “Model Number” | “80110583”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Fi3.5
Row from the maker’s page: “Fi Series Name” | “Fi3.5”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Other findings
- Charge time full
- 4 hours
- Communications bus secondary
- designed with two CANbus ports, the battery pack can easily exchange information with OEM equipment. One CANbus uses the J1939 automotive standard, while the other is designed for uncomplicated data transfer with each OEM's current communication network
- Rated discharge current
- 67 A
- Top voltage
- 58,8 V
“Standard Charge Time 4 hours”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
“The 3.5kWh* Battery is a total solution that provides instant, reliable power. Designed with two CANbus ports, the battery pack can easily exchange information with OEM equipment. One CANbus uses the J1939 automotive standard, while the other is designed for uncomplicated data transfer with each OEM's current communication network with no reprogramming of that network required.”
Source: briggsandstratton.com/hubfs/Website Migration 2025/Briggs/PDFs/Vanguard Batteries Fixed Series.pdf
“Discharging Current, Nominal 67”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
“Nominal Voltage (V) 51,6 Top Voltage (V) per IEC 61960 58,8”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Sources
- Image read for ingressProtection on vanguard-fi7-0-t-48v-7-0kwh-fixedManufacturer document
Vanguard
Source: vanguardpower.com/hs-fs/hubfs/Vanguard/EMEA/Images/Icons/IP56-badge-200x200.png?width=200&height=200&name=IP56-badge-200x200.png
Retrieved September 23, 2026
- Vanguard™ 48V 3,5kWh Fixed Commercial Battery Pack (Fi3.5)Manufacturer document
Vanguard
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/48v-3-5kwh-fixed-battery
Retrieved September 23, 2026
- Vanguard — VAN EU Commercial Guide 2026 Brochure webManufacturer document
Vanguard
Source: vanguardpower.com/hubfs/Vanguard/EMEA/Files/Brochures Sales Sheets/VAN_EU_Commercial_Guide_2026_Brochure_web.pdf
Retrieved September 24, 2026
- Archived document
Source: briggsandstratton.com/hubfs/Website Migration 2025/Briggs/PDFs/Vanguard Batteries Fixed Series.pdf
Retrieved September 24, 2026