Expion360 EX-G27-120XDP (12V 120Ah Group 27 Classic)

SKU EX-G27-120XDP

The Expion360 EX-G27-120XDP (12V 120Ah Group 27 Classic) is a battery pack with a nominal voltage of 12.8 Vdc, a rated capacity of 120 Ah, 1536 Wh of energy, Cylindrical (LiFePO4) cells, an ingress rating of IP66, as the product page prints it and a weight of 30 lb (14.0 kg).

Last updated: 8 October 2026

Battery and charging

Cells: Cylindrical (LiFePO4)
Energy: 1536 Wh
Voltage: 12.8 Vdc
Rated capacity: 120 Ah
Rated charge cycles: >3500 cycles at 1C, 100 % DoD, as the datasheet prints it
Cell arrangement: 4S/30P
Recommended charging: 30 A, the recommended charge current
Maximum discharge current, as the maker labels it: 120 A, the row the datasheet labels Max. Discharge Current
Continuous discharge current: 100 A
Pulse discharge current: 150 A (1 s)
Maximum charge current, as the maker labels it: 60 A, the row the datasheet labels Maximum Charge Current
Recommended voltage disconnect: 10.5 Vdc
BMS charge cut-off voltage: 14.6 Vdc
Charge method: CC-CV
Resistance: <5 mΩ
Efficiency: >99 %
Charging voltage: 14.6 Vdc
Float voltage: 13.6 Vdc
Voltage it cuts off at: 9.2 Vdc
How fast it loses charge sitting idle: <2 % per month

Battery care and safety

Ingress protection: IP66, as the product page prints it
Short-circuit cut-off: 200 µs to 600 µs
Temperatures it may be charged in: 32 ˚F to 140 ˚F (0 ˚C to 60 ˚C)
Temperatures it may be run in: -4 ˚F to 140 ˚F (-20 ˚C to 60 ˚C)
Temperatures it may be stored in: 32 ˚F to 95 ˚F (0 ˚C to 35 ˚C)
Housing flammability rating: UL-94 V-0
How to store it: One discharge-recharge cycle every 6 months.

Size and fit

Weight: 30 lb (14.0 kg)
Overall dimensions: 11.9 in x 6.8 in x 8.6 in; the metric size is on the row beneath
Case material: ABS Plastic Case
Terminal thread: M 8 x 1.25
Group the maker sells it as: Group 27, as the maker's page prints it (not checked against BCI's table)

Buying and owning it

How it is classified for shipping: UN3480, Class 9, UN38.3
What it is said to be best for: RV, overland, van-build, marine and off-grid use; not a named-vehicle fitment

Certification claims

UL certification held by the cells: UL 1642 For Cells, File no. MH64383
Certification claimed by the manufacturer: Certified compliant to UL 1973 by TEi Listing Services, File no. 22D01

Sources

Archived document
Source: cdn.shopify.com/s/files/1/0469/5742/8899/files/EX-G27-120XDP_V.04_02132024.pdf?v=1707933708
Retrieved October 8, 2026
E360 120 Ah G27 Extreme-Density LiFePO4 Deep Cycle Battery – Expion360Archived document
Source: web.archive.org/web/20250803061534/https://expion360.com/products/expion360-e360-batteries-lithium-group-27-120-amp-hour-ex-g27-120xdp
Retrieved October 8, 2026