From our shop to your build
Lithionics is the battery line we build our van electrical systems around. This module needs an external BMS and a system design to match - talk to us before you order and we will help you spec the whole package, BMS, charging, and cabling included.
Technical details
Specifications
| Model | GTX12V320A-E2107-DIN-12HK-UL |
|---|---|
| Type | Lithium iron phosphate (LiFePO4) battery module - external BMS version |
| Case | Aluminum alloy enclosure; this version is designed with an internal heater kit |
| BMS | External Lithionics NeverDie® BMS required - sold separately, not included with the module |
| Nominal voltage | 12.8V |
| Capacity | 320Ah - 4,096 watt-hours |
| Internal resistance | <3 milliohms |
| Charge voltage | 14.4V recommended |
| Float charge voltage | 13.4V - 13.6V (standby use) |
| Charge current | 150A recommended - 250A maximum* |
| Discharge current | 150A recommended - 250A maximum* |
| Pulse discharge | 1,200A (1 second) |
| Operating voltage range | 11.6V - 13.4V |
| Discharge cut-off | NeverDie® Power Reserve at 12.0V; low-voltage cut-off at 11.6V (via the external BMS) |
| Charging temperature range | 32°F to 131°F (0°C to 55°C); down to -4°F (-20°C) with the heater kit |
| Discharging temperature range | -4°F to 131°F (-20°C to 55°C) |
| Dimensions | 20.3 in L x 6.6 in W x 10.0 in H |
| Weight | Approx. 68 lb (30.8 kg) |
| Mounting orientation | Upright only - black lid faces up |
| Self-discharge | ≤3% per month (residual capacity) |
| Safety testing | UL 1973 - maximum charge and discharge currents tested per UL 1973 at 25°C / 77°F (manufacturer data sheet) |
| Warranty | Lithionics limited warranty: 5 years or 3,000 cycles, whichever comes first, against defects in materials and workmanship - see the Lithionics warranty statement for full terms |
*Maximum charge and discharge rates depend on ambient temperature and system duty cycle.
Measure twice
Dimensions & fitment notes
Case size: 20.3″ long × 6.6″ wide × 10.0″ high - a long, narrow DIN-format case that suits under-bench and garage installs. Weight: about 68 lb, so plan the lift and the mounting surface accordingly. Orientation: upright only, black lid facing up - other orientations are not permitted. BMS placement: the external NeverDie BMS is a separate unit and must mount close enough to the module for its connectors to mate securely; leave working access to both. Keep the module and BMS in a closed compartment, out of direct sunlight, pressurized water, and road debris.
Dimensions are per the manufacturer's published specs and are provided as a fitment guide. Master Overland isn't responsible for fitment issues caused by manufacturing variances — when in doubt, measure your opening and email us before ordering.
From our install bay
Installation notes
This module is one half of a system - it only runs with a Lithionics external NeverDie BMS (sold separately), and Lithionics writes its installer's guides for qualified installers. The short version:
- Consult first: we require a consultation before ordering any Lithionics battery. The BMS model, fuse sizes, and cable runs are chosen for your loads and chargers, not guessed.
- Mounting: module upright, black lid up. Mount the BMS unit nearby in any orientation, with all of its connectors and switches accessible.
- Wiring: use proper wire sizes for the current involved and crimped connections at the battery terminals. In Lithionics' own external-BMS kit designs, the main positive run is protected by a Class T fuse and an isolation switch mounted as close to the BMS as practical.
- Charging profile: every charge source must be LiFePO4-compatible and set to 14.4V charge voltage with a 13.4-13.6V float. For alternator charging, use a battery-to-battery (DC-DC) charger programmed with a lithium profile.
- First charge matters: the initial full charging cycle calibrates the NeverDie BMS to the module, which is what makes its state-of-charge readings accurate.
- NeverDie reserve: the BMS disconnects power at 12.0V (or about 10% state of charge) and holds a reserve instead of letting the module drain flat - a short press of the power switch releases the reserve.
- Storage: for storage over 3 months, park the module at 13.2V (about 50% charge) in the recommended 59-95°F range and run at least one charge/discharge cycle every six months.
Choose with confidence
How it compares
An honest side-by-side. We'd rather you buy the right model once than the wrong one twice.
| Factor | GTX12V320A-E2107-DIN-12HK-UL (this battery) | GTX12V320A-E2107-CS200 (heated, built-in BMS) |
|---|---|---|
| BMS | External NeverDie BMS - required, sold separately | Internal NeverDie BMS, built in |
| Capacity | 320Ah - 4,096Wh at 12.8V | 320Ah - 4,096Wh at 12.8V |
| Max charge current | 250A | 200A |
| Max discharge current | 250A | 230A |
| Pulse current (1 sec) | 1,200A | 1,200A |
| Case size | 20.3″ x 6.6″ x 10.0″ | 20.3″ x 6.4″ x 10.0″ |
| Weight | Approx. 68 lb | 68 lb |
| Cold-weather charging | Heater-kit version - charging range extends to -4°F | 35W internal heater - charging at ambient down to -4°F |
| Monitoring | Through the external BMS (state-of-charge gauge and telemetry options) | Built in, with Bluetooth app monitoring |
| Expanding the system | One external BMS can monitor multiple modules in parallel (OptoLoop); series systems are a designed configuration - ask us | Series connection not supported |
| Best for | Custom, high-current systems designed around a separate BMS | Simpler installs that want BMS and Bluetooth in one box |
Fitment
Fitment & compatibility FAQ
Does this battery include a BMS?
No - and it cannot run without one. This is the external-BMS version of the E2107 module: a Lithionics NeverDie external BMS is required and is sold separately. The BMS provides the low- and high-voltage cut-offs, short-circuit protection, and state-of-charge monitoring for the system.
Why choose the external-BMS version over the built-in BMS model?
Current headroom and system design. This module is rated to 250A maximum charge and 250A maximum discharge, above the built-in-BMS CS200 version's 200A / 230A, and one external BMS can monitor multiple modules in parallel through Lithionics' OptoLoop system. It is the version to build a larger or higher-current system around.
What charging settings does it need?
A LiFePO4 charging profile at 14.4V charge voltage, with a 13.4-13.6V float for standby use. Recommended charge current is 150A, with 250A the maximum. Every charge source in the system - inverter/charger, solar controller, DC-DC charger - needs to be set to those values.
What size inverter can one module support?
The module itself is rated at 250A maximum discharge, and Lithionics designs its external-BMS installation kits around 3,000W inverter/chargers. Your real continuous limit is set by the external BMS you pair it with, which is exactly what the pre-order consultation is for - we spec the module, BMS, fusing, and cabling as one system.
Can I charge it below freezing?
Standard charging range is 32F to 131F. This is the heater-kit version, and the manufacturer data sheet extends the charging range down to -4F (-20C) with the heater kit. Outside of that, do not charge a lithium battery below its rated range - the BMS will intervene to protect the cells.
Can I run modules in parallel or series?
Parallel, yes - a single external NeverDie BMS can monitor multiple modules in parallel via OptoLoop cell monitoring. Series configurations for 24V and higher exist within the NeverDie BMS family, but they are a designed system, not a wiring shortcut - talk to us before planning one.
How should I store it over winter?
For storage longer than 3 months, Lithionics specifies parking the module at 13.2V (about 50% state of charge), ideally between 59F and 95F, and running at least one charge and discharge cycle every six months. Self-discharge is low - 3% per month or less.
Real answers
Questions from customers
Questions buyers have actually asked us, answered by our team. Have one we haven't covered? Email us — we answer.
Is the BMS really not included?
Correct - this listing is the battery module only. The external NeverDie BMS is a separate unit, sold separately, and the module will not operate without it. Every Lithionics order with us starts with a consultation so the BMS and the rest of the system are specified correctly the first time.
How much usable energy do I actually get?
The module is rated 320Ah / 4,096Wh. The NeverDie system holds a reserve: power disconnects at 12.0V (about 10% state of charge) instead of draining the module flat, and a short press of the power switch releases that reserve if you need it.
Will it fit where my old house batteries sit?
Measure first: the case is 20.3 in long, 6.6 in wide, and 10.0 in tall, about 68 lb, and it must sit upright with the black lid up. The separate BMS unit also needs a mounting spot close to the module. Send us your compartment dimensions and we will confirm fit before you order.
Can Master Overland design or install the full system?
Yes - Lithionics systems are what we build van electrical around, and we can spec the module, BMS, charging sources, and cabling as one package, or install it in our shop. Start with the consultation and we will lay out the whole system.