The EG4 WallMount 314Ah Indoor Battery pairs with a 12000XP V2 inverter to give you whole-home backup power in a wall-mounted, indoor-rated package. It stores 16.1 kWh and delivers 200A continuous output — sized for daily solar cycling or grid-outage backup, not for casual portable use.
Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
Built for Daily Cycling, Verified by the Numbers
This is a LiFePO4 (Lithium Iron Phosphate) system — the chemistry favored for stationary home storage because it tolerates high daily cycle counts without the thermal runaway risk associated with other lithium chemistries. The manufacturer data provided lists 16.1 kWh of usable storage and a 200A continuous discharge rating, both directly tied to the inverter's ability to run whole-home loads. Voltage, exact BMS charge limits, cycle life figures, unit dimensions, weight, and operating temperature range were not included in the source data for this listing — treat those as open questions to confirm before you size a system around this unit.
Battery Characteristics
- Chemistry: LiFePO4 (Lithium Iron Phosphate)
- Capacity: 314Ah
- Energy Storage: 16.1 kWh
- Format: Indoor wall-mount battery paired with 12000XP V2 inverter
- Voltage: [NEEDS VERIFICATION]
- Dimensions / Weight: [NEEDS VERIFICATION]
Wiring & Configuration Limits
The source data does not specify a maximum series or parallel expansion count for this battery/inverter pairing. Do not assume this unit can be stacked in series or parallel without confirming limits with BigBattery documentation first — wiring beyond an unverified limit can trigger BMS lockout or cause cell imbalance across units.
Not confirmed for this listing: series/parallel expansion limits, compatible AC coupling equipment beyond the bundled 12000XP V2 inverter, and compatibility with third-party inverters. Do not wire this battery with a non-EG4 inverter unless the manufacturer confirms compatibility.
Pro-Installer Tip
Lithium banks built for daily solar cycling are vulnerable to two failure modes: charging in freezing conditions and stacking units past an unconfirmed series/parallel limit. Charging any LiFePO4 cell below freezing plates lithium metal on the anode permanently, shrinking usable capacity cycle over cycle. Before adding a second unit to this system, confirm the manufacturer's series/parallel limit in writing — wiring past that limit invites cell imbalance and BMS lockout that shows up as a sudden loss of output, not a gradual one. Verify state of charge and pack balance with a shunt-based battery monitor rather than relying on the inverter's onboard display alone, and plan your daily discharge around your confirmed depth-of-discharge rating once you have it from BigBattery documentation.
Key Benefits
- 16.1 kWh of usable storage per unit for whole-home or small-business backup
- 200A continuous discharge rating supports high-draw appliances and multiple circuits
- Wall-mount, indoor-rated form factor keeps the battery out of garage/outdoor temperature swings
- Bundled 12000XP V2 inverter removes the guesswork of separately sourcing a matched inverter
Technical Table
| Spec | Value |
|---|---|
| Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Capacity | 314Ah |
| Energy Storage | 16.1 kWh |
| Max Continuous Discharge | 200A |
| Voltage | [NEEDS VERIFICATION] |
| Max Continuous Charge (BMS) | [NEEDS VERIFICATION] |
| Peak Discharge | [NEEDS VERIFICATION] |
| Cycle Life | [NEEDS VERIFICATION] |
| Dimensions | [NEEDS VERIFICATION] |
| Weight | [NEEDS VERIFICATION] |
| Terminal Type | [NEEDS VERIFICATION] |
| Operating Temp Range | [NEEDS VERIFICATION] |
| Low-Temp Charging Protection | [NEEDS VERIFICATION] |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
This listing bundles the EG4 WallMount 314Ah Indoor Battery with the 12000XP V2 inverter as a matched set. It is rated for indoor installation — the source data does not describe outdoor or marine sealing, so do not install this unit outdoors or in a marine environment. It is not sold here as a standalone battery without the inverter, and it is not a starter battery; do not use it for engine cranking. Charging requirements beyond the paired 12000XP V2 inverter (e.g., compatibility with third-party lithium chargers or other inverter brands) are not confirmed in the source data — do not assume interchangeability without checking manufacturer documentation.
FAQ
Q: What chemistry does the EG4 WallMount 314Ah battery use?
A: LiFePO4 (Lithium Iron Phosphate).
Q: How much energy does this battery store?
A: 16.1 kWh of storage capacity.
Q: What is the continuous output rating?
A: 200A continuous output.
Q: Does this system include an inverter?
A: Yes, it is bundled with a 12000XP V2 inverter.
Q: Can I install this battery outdoors?
A: The battery is described as an indoor unit in the manufacturer data; outdoor suitability is not confirmed, so treat it as indoor-only until verified.
Warranty & Support
Warranty terms for this bundle were not included in the source data provided. Refer to the "Resources (System Manuals and Warranty)" Tab above for the manufacturer's warranty documentation before you order. If anything on this page needs clarification, ask us before you order — we always reply back.
