Vanguard 24V 3,5kWh Fixed Commercial Battery Pack (Fi3.5)
SKU 80127410
Vanguardvanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
The Vanguard 24V 3,5kWh Fixed Commercial Battery Pack (Fi3.5) is a battery pack with a nominal voltage of 25,8 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
- 134
- Communications bus
- CANJ1939 (29-bit, 500kbps)
- Rated charge cycles
- Up to 2.000 cycles to 80% initial capacity
- Nominal capacity
- Sources disagree
135,9 Ah
“Cutoff Voltage (V) 17,5 Nominal Capacity per IEC 61960 135,9 Ah / 3,5 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
135,9 Ah / 3,5 kWh
Row from the maker’s page: “Nominal Capacity per IEC 61960” | “135,9 Ah / 3,5 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
- Nominal voltage
- 25,8 V
- Discharge cut-off
- 17,5 V
- Maximum in parallel
- 10
- Stated energy
- 3,5 kWh
Row from the maker’s page: “Discharging Current, Nominal” | “134”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-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/24v-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/24v-3-5kwh-fixed-battery
Row from the maker’s page: “Nominal Voltage (V)” | “25,8”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
Row from the maker’s page: “Cutoff Voltage (V)” | “17,5”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
“Parallel Capable Yes, up to 10 batteries”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
“Cutoff Voltage (V) 17,5 Nominal Capacity per IEC 61960 135,9 Ah / 3,5 kWh”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-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/24v-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/24v-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/24v-3-5kwh-fixed-battery
Size and fit
- Weight
- 26,3 kg
- Overall dimensions
- 482mm x 272mm x 266mm
“VANGUARD 24V 3,5kWh1 Fixed Battery Pack - Fi3.5 Model Number 80127410 Nominal Voltage (V) 25,8 Top Voltage (V) 29,4 Cut-Off Voltage (V) 17,5 Nominal Capacity / Energy (Ah / kWh) 135,9 / 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 24V 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
80127410
Row from the maker’s page: “Model Number” | “80127410”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-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/24v-3-5kwh-fixed-battery
Other findings
- Design rationale
- By offering a battery with a 24V configuration, Vanguard can help simplify the integration process for existing OEM applications utilizing lead-acid batteries.
- Rated discharge current
- 134 A
- Top voltage
- 29,4 V
“The 3.5kWh* Battery is available in both 24V and 48V configurations. By offering a battery with a 24V configuration, Vanguard can help simplify the integration process for existing OEM applications utilizing lead-acid batteries.”
Source: briggsandstratton.com/hubfs/Website Migration 2025/Briggs/PDFs/Vanguard Batteries Fixed Series.pdf
“Discharging Current, Nominal 134”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
“Nominal Voltage (V) 25,8 Top Voltage (V) per IEC 61960 29,4”
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-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™ 24V 3,5kWh Fixed Commercial Battery Pack (Fi3.5)Manufacturer document
Vanguard
Source: vanguardpower.com/en-gb/batteries/lithium-ion-battery-packs/fixed-battery-packs/24v-3-5kwh-fixed-battery
Retrieved September 24, 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