Storage is what turns solar into power you own. Without a battery, your panels still go dark when the grid does. LiFePO4, 48V, server-rack and wall-mount, all expandable as you grow.
LiFePO4 battery modules, wall-mount and server-rack, sized from a single room up to whole-home backup. Stack more as you grow.
A 16kWh wall-mount battery rated for the weather, so it lives outside next to the inverter and costs you no indoor space. 51.2V, 314Ah of LiFePO4, IP67 sealed, about 12.9kWh usable and 10.2kW continuous, 10,000-cycle life. UL 1973 listed and UL 9540A tested. One of the simplest ways to add real storage to an outdoor build.
The Enphase IQ Battery 5P is a 5kWh modular AC-coupled battery from Enphase. Built around the same per-module microinverter approach as the Enphase IQ8 panels: each battery carries its own AC inverters, so the battery talks 240V AC to your panel directly without a separate hybrid inverter. The big advantage of the modular AC-coupled design is that scaling is simple. Add a second 5P for 10kWh, a third for 15kWh, and the system commissioning treats each battery as another node. The IQ System Controller 3 handles the grid-tie and backup transitions, and the IQ Combiner 5C is the panel-level integration point. Liquid-cooled cells, 10-year warranty, IP55 enclosure for indoor or garage mount (not full outdoor). Pairs with the Enphase IQ Combiner 5C and IQ System Controller 3 for a complete Enphase-stack install. The right pick when the rest of the install is already Enphase microinverters and you want a battery that stays inside the Enphase ecosystem.
The indoor version of EG4's 16kWh wall-mount. 51.2V, 314Ah of LiFePO4, about 12.9kWh usable, 10.2kW continuous with a 12.8kW peak. IP20 indoor case, 10,000-cycle life, UL 1973 listed and UL 9540A tested. Mount it in the garage or utility room and wire straight to the inverter.
A 14.3kWh outdoor wall-mount built to sit in the weather, IP65 sealed with a 15-year design life. 51.2V, 280Ah of LiFePO4, rated past 8,000 cycles, UL 1973 listed and UL 9540A tested. The right outdoor unit when 14kWh covers the build and you want to spend a bit less than the 16kWh.
A 5.12kWh server-rack battery that bolts into a standard EG4 rack and gangs with up to 63 more. 51.2V, 100Ah, 100A BMS, rated past 7,000 cycles, UL 1973 listed and UL 9540A tested. The step-up rack module: more cycle life than the LifePower4 and closed-loop comms with more inverter brands. Grow your bank one module at a time.
EG4's value server-rack battery. 5.12kWh, 51.2V, 100Ah with a 100A BMS, rated past 6,000 cycles. UL 1973 listed and UL 9540A tested, and it racks up with more modules as you grow. The budget way into a server-rack bank. Step up to the LL-S when you want more cycle life.
Enclosures, mounting racks, conduit boxes, and the monitors that keep an eye on state of charge.
The EG4 6-Slot Battery Cabinet is the wall-mounted enclosure for stacking up to six EG4 rackmount batteries into a single bank. Each slot holds one 48V LiFePO4 server-rack-style battery, and the cabinet handles the cable runs, mounting points, and the side panels that keep the install looking clean. Six 100Ah batteries inside this cabinet builds out to roughly 30kWh of usable storage at 48V, which covers most whole-home backup or off-grid scenarios without needing a second cabinet. The arrangement keeps the comms and DC cabling inside the enclosure, with the inverter run out the top or bottom. Sold as the cabinet only. Batteries are sold separately. Pairs with EG4 rackmount lithium batteries like the LL-S and Lifepower4. Bolts to a wall stud and accepts batteries from the front.
The EG4 3-Slot Battery Rack is the smaller sibling of the 6-slot cabinet. It holds up to three EG4 rackmount batteries in a server-rack format and works as a free-standing rack or wall-mounted bank for smaller off-grid and backup builds. Three 100Ah batteries inside this rack lands at roughly 15kWh of usable storage at 48V, which covers a critical-load backup or a starter off-grid bank. Step up to the 6-slot cabinet if you're sizing for whole-home backup or a longer off-grid runtime. Sold as the rack only. Pairs with EG4 rackmount lithium batteries like the LL-S and Lifepower4. Cable management runs inside the rack, with the inverter connection out the back or top.
The EG4 AllWeather Conduit Box is the outdoor-rated conduit box for the EG4 inverter family. It mounts to the bottom of a wall-mounted EG4 inverter (12000XP, 18kPV, 12kPV, FlexBOSS18, or FlexBOSS21 depending on the build) and provides the conduit landings and DC/AC wiring space the inverter needs. NEMA 3R rated, which means it can sit outside without a separate roof or rain shield. Pre-cut knockouts in the bottom and sides for the conduit runs to the panel, the battery, and the PV combiner. Internal wire management keeps the lugs accessible during install and inspection. The Buildable Conduit Box is the indoor or sheltered alternative if your inverter sits in a garage or utility room. The AllWeather is the right pick when the inverter is on an exterior wall or under a carport. Pairs with the 12000XP Top Plate when the install wants the top plate finish.
The EG4 Buildable Conduit Box is the modular conduit box that mounts under an EG4 inverter for the DC and AC landings. It's the indoor or sheltered version of the AllWeather, designed for a garage, utility room, or sheltered exterior wall where the install doesn't need a NEMA 3R rating. The "buildable" name comes from the customer-configurable knockouts. You knock the ones you need for your specific conduit run pattern and leave the rest closed, so the same box works for grid-tied builds, off-grid builds, and battery-attached builds without a separate SKU. Pairs with the 12000XP, 18kPV, 12kPV, FlexBOSS18, and FlexBOSS21. Step up to the EG4 AllWeather Conduit Box when the inverter mounts on a fully exposed exterior wall.
The builder sizes storage to your panels and the loads you want to keep on. It picks one that fits.
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