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Shop EG4 Batteries & Energy Storage — Best Value in Solar Batteries
Portlandia Electric Supply is an authorized dealer for EG4 Electronics, one of the fastest-growing solar battery brands in the US. EG4 batteries offer exceptional value, high cycle life, and compatibility with all major hybrid inverters. We stock the full EG4 lineup including LifePower4, LL, WallMount, and 6000XP hybrid inverters.
Why EG4 Batteries Dominate the DIY Solar Market
EG4 has become the go-to battery brand for DIY solar installers and contractors because of its unbeatable combination of price, performance, and reliability. Here's what makes EG4 stand out:
- Best Value per kWh — EG4 batteries cost $200–$350/kWh, significantly less than competitors like Tesla Powerwall ($1,100/kWh) or Enphase ($800/kWh).
- 6,000+ Cycle Life — Rated for over 6,000 deep discharge cycles at 80% DoD, providing 15+ years of service.
- Built-in BMS — Every EG4 battery has an intelligent Battery Management System that protects against overcharge, over-discharge, overcurrent, and temperature extremes.
- Scalable Design — Parallel up to 16 units (LifePower4) or 64 units (LL) for massive capacity expansion.
- Hybrid Inverter Compatible — Works seamlessly with Sol-Ark, SolarEdge, SMA, and EG4's own 6000XP and 18kPV inverters.
- UL 1973 & UL 9540A Certified — Meets safety standards for residential and commercial energy storage.
EG4 Battery Lineup Comparison
| Model | Capacity | Voltage | Cycles | Parallel | Best For | Price |
|---|---|---|---|---|---|---|
| EG4 LifePower4 | 5.12 kWh (48V 100Ah) | 48V | 6,000+ | Up to 16 | Residential, budget-friendly | $1,200–$1,400 |
| EG4 LL (V2) | 5.12 kWh (48V 100Ah) | 48V | 7,000+ | Up to 64 | Residential, premium | $1,300–$1,500 |
| EG4 WallMount | 16 kWh (48V 314Ah) | 48V | 6,000+ | Up to 16 | Residential, space-saving | $3,400–$3,800 |
| EG4 6000XP Inverter | 6kW AC output | 48V | N/A | N/A | Hybrid inverter + battery | $1,800–$2,200 |
| EG4 18kPV Inverter | 18kW AC output | 48V | N/A | N/A | Large residential, commercial | $3,500–$4,000 |
EG4 vs. Competitor Solar Batteries
| Feature | EG4 LifePower4 | Tesla Powerwall 3 | Enphase IQ 5P |
|---|---|---|---|
| Price per kWh | $235–$275 | $1,100+ | $800+ |
| Capacity | 5.12 kWh | 13.5 kWh | 5 kWh per unit |
| Chemistry | LiFePO4 | LFP | LFP |
| Cycles | 6,000+ | Not specified | 6,000 |
| Scalable | Yes (up to 16–64 units) | Up to 10 units | Up to 40 kWh |
| Warranty | 10 years | 10 years | 15 years |
| Inverter Required | External (any 48V hybrid) | Built-in | External (IQ8 required) |
EG4 Battery System Configurations
Small Home Backup (10–15 kWh)
2–3 × EG4 LifePower4 + Sol-Ark 8K or EG4 6000XP inverter. Powers critical loads (refrigerator, lights, well pump, internet) for 1–2 days. Starting at $4,500 for batteries + inverter.
Medium Home Solar + Storage (20–30 kWh)
4–6 × EG4 LifePower4 or 2–3 × EG4 WallMount + Sol-Ark 12K or EG4 18kPV inverter. Powers entire home for 1 day or critical loads for 2–3 days. Starting at $8,000.
Large Home / Commercial (30+ kWh)
6–16 × EG4 LifePower4 or 4–8 × EG4 WallMount + Sol-Ark 15K or EG4 18kPV inverter. Full home power with grid independence. Starting at $12,000.
Why Buy EG4 from Portlandia Electric Supply?
- Authorized EG4 Dealer — Full factory warranty honored. No gray-market risk.
- Best Pricing — We match or beat any competitor's EG4 price. Financing available.
- Technical Support — Our team knows EG4 systems inside and out. Call (888) 876-0007.
- System Bundles — Pre-configured EG4 + inverter kits with guaranteed compatibility. Browse kits.
- Volume Discounts — 4+ batteries get wholesale pricing. Request a quote.
- Fast Shipping — In-stock EG4 batteries ship same-day or next-day.
EG4 Battery Frequently Asked Questions
Is EG4 a good battery brand?
Yes. EG4 is one of the most popular and reliable battery brands in the DIY solar market. The LifePower4 and LL series have been tested extensively by thousands of installers and consistently perform well. They offer the best value per kWh of any lithium battery on the market.
Where are EG4 batteries manufactured?
EG4 batteries are designed in the US and manufactured in China using Grade A LiFePO4 cells. They are UL 1973 and UL 9540A certified for safety. The 6000XP and 18kPV inverters are designed in the US.
Can I use EG4 batteries with my existing inverter?
EG4 batteries are compatible with most 48V hybrid inverters including Sol-Ark, SolarEdge, SMA, Schneider, and Victron. Always check voltage compatibility and communication protocol (CANBus or RS485). Our team can confirm compatibility. Call (888) 876-0007.
How many EG4 batteries do I need?
For a typical home backup system: 2–4 LifePower4 batteries (10–20 kWh). For off-grid: 4–8 batteries (20–40 kWh). For a full home with solar: 4–6 batteries (20–30 kWh). We can calculate your exact needs. Get a quote.
What is the warranty on EG4 batteries?
EG4 batteries come with a 10-year manufacturer warranty. The warranty covers defects and capacity degradation. For warranty claims, contact our support team or call (888) 876-0007.
Shop EG4 Batteries Below
Browse our full EG4 inventory including LifePower4, LL, WallMount, and inverters. Or get a custom EG4 system quote with panels, inverter, and battery bank. Call (888) 876-0007 for expert EG4 system design.
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