The AM-4 is a 25.5V Lithium battery we are producing to cater for the 24V market. The AM-4 is the perfect fit for 24V where you still have the need to install lithium. specification: 25.5V 2.6KWh Rating: 1C Parallel: up to 15 units per string Extras: Battery Link & DC cables included Internal Fire Suppression System: YesCAN Bus: Yes Hubble Cloudlink Ready: Yes Rated Capacity (5HR): 125 Ah Nominal Voltage: 25V Design Capacity: 3.1kWh Equalized Charge Voltage: 29V Max. Continuous Charging Current: 115A Max. Continuous Discharging Current: 100A C Rating: 1.0C Weight: Approx. 21kg Display: None Parallel: Parallel connection up to 15 packs with full communications Dimensions: 375mm (w) x 147mm (d) x 371mm (h) Ports: 1x CAN-bus, X2 Battery Link Ports Cells: New Li-ion Prismatic Cells Design Life: ±15 Years Cycle Life @ 1C: Above 6000 cycles @50% DOD, +/- 3 000 Cycles @ 100% DOD Certification: CE, UN38.3, GBT31484-2015, GBT31485-2015, GBT31486-2015 Outer Package Material: White baked lacquer steel case Operating Temperature Charging: 0°C to +55°C Discharging: -10°C to +55°C Storage: -10°C to +55°C Protection: Electronic Circuit Breaker, BMS Voltage Protection, Current Limiting Battery Warranty: https://www.hubblelithium.co.za/_files/ugd/49fdd5_006693318a91462aba88ffe9ea36aec3.pdf The warranty period commences on the date of purchase from Hubble Lithium (Pty) Ltd (Hubble Lithium) as reflected in the relevant Hubble Lithium tax invoice. Hubble Lithium warrants that the Battery cells will achieve at least 10 years service life or deliver at least 3000 charge-discharge cycles as counted by the BMS, which ever event occurs first.