LiFePO₄ Battery FAQ

Yes. Shenzhen EGBATT Co., Ltd is a direct manufacturer and one of the pioneers of LiFePO₄ (Lithium Iron Phosphate) battery production for solar energy storage systems in China. We have been operating since 1999 — over 25 years in the lithium battery industry — and run a 25,000 m² automated production facility in Guangdong (Shenzhen / Dongguan).

We are a full OEM & ODM provider. Our core product lines include:

• Residential & commercial LiFePO₄ solar energy storage (ESS) — wall-mounted, rack-mounted and stacked batteries
• Material handling batteries (48V / 64V / 72V / 96V forklift & LSV batteries)
• Low-speed power batteries for RVs, marine, golf carts, and boats
• UPS & industrial backup power systems, plus C&I BESS (up to 1MWh)

Because we control the entire chain — from cell selection and self-designed BMS to pack assembly and certification — we can guarantee consistent quality and competitive factory-direct pricing.

Thanks to our automated production lines and mature supply chain, standard products ship in 15–25 days after order confirmation. Lead times vary with:

• Order volume — container-scale orders may need additional scheduling
• Customization level — standard SKUs are fastest; OEM/ODM with custom BMS, casing or communication protocols take longer (typically 30–45 days including prototyping)
• Certification needs — extra third-party testing (UL, CE, CEC, etc.) adds time

For urgent projects, our sales team can prioritize production. Contact us with your target delivery date and we will propose a realistic schedule.

We insist on A+ grade LiFePO₄ prismatic cells sourced from top-tier global cell producers such as EVE and REPT, chosen for maximum safety, thermal stability and cycle life. Every cell batch is incoming-inspected and batch-tested before assembly.

Key battery specifications:

• Cycle life: 6,000+ deep cycles at 90% DoD (≈ 10+ years of daily use)
• Chemistry: Lithium Iron Phosphate — the safest mainstream lithium chemistry
• Self-designed BMS: over-charge, over-discharge, over-current, short-circuit, over-temperature and cell-balancing protection
• Safety record: no fire or explosion recorded in destructive testing

EGBATT 48V / 51.2V batteries communicate via RS485, CANbus, and optional Bluetooth / 4G / WiFi modules, making them compatible with most mainstream hybrid and high-voltage inverters. Verified / supported brands include:

Victron EnergyGoodWeStuderSolisLuxPowerSAJSRNETBB PowerDeyePhocosAforeSunsynkSolaX PowerEPEVERAtessSolinteg

For high-voltage three-phase systems, compatible brands include Atess, Solinteg, SAJ, GoodWe, Solis and Afore. If your inverter is not listed, send us the model and communication protocol — our engineering team will configure the BMS protocol to match it.

We cover the full residential-to-utility range:

• By form factor: Wall-mounted (5kWh & 10kWh), Rack-mounted (48V 100/150/200Ah), and Stacked / modular systems
• By voltage: 48V, 51.2V, and high-voltage (HV) three-phase systems
• By application: Residential ESS, Commercial & Industrial BESS (100kW / 215kWh / 300kWh, up to 1MWh), and Off-grid / Hybrid kits
• Flagship residential unit: 51.2V 300Ah = 15kWh rack battery with robust 16S LiFePO₄ prismatic cells

All models support parallel connection for capacity expansion, so a system can grow with your energy needs.

We offer an up to 10-year warranty on our energy storage products, backed by dedicated technical support. The warranty reflects our confidence in the 6,000+ cycle, 10-year design life of our LiFePO₄ packs. Warranty terms are defined per product SKU and order agreement — ask your sales contact for the exact coverage on your model.

We treat partners as long-term collaborators, not just buyers. Dealer / installer support includes:

• Product quality guarantee with factory-direct QC and batch testing
• Comprehensive warranty & after-sales service, with remote BMS diagnostics
• Free additional spare parts (e.g. communication cables, fuses, mounting kits)
• Competitive OEM/ODM pricing and flexible MOQ
• High-quality marketing materials — datasheets, images, install guides, and co-branded collateral
• Pre- and post-sale technical team for system design, commissioning, and protocol matching
• Certification assistance (UL, CE, CB, CEC, CEI) for target markets

A home battery (often called a "Powerwall" after the popular Tesla product) is an advanced battery backup system for residential and light-commercial use. It stores solar energy generated during the day for use at night, provides backup power during grid outages, and can save money by shifting consumption from expensive peak-rate hours to cheaper off-peak hours (time-of-use arbitrage).

EGBATT's wall-mounted 5kWh / 10kWh and rack 48V batteries are drop-in alternatives that deliver the same functions at a competitive factory-direct price.

It is a device that stores the surplus electricity your photovoltaic (PV) system generates. The stored energy is available on demand — powering your home when the sun isn't shining or the grid is down. The public grid is only used when the battery is completely full (excess export) or empty (backup). A hybrid inverter + EGBATT LiFePO₄ battery is the typical configuration.

Follow a 3-step estimate, then confirm with a professional:

• 1. Look at history: Calculate your average annual electricity consumption from the past 5 years of utility bills.
• 2. Plan for the future: Add headroom for family growth, an EV charger, a heat pump, or a new workshop.
• 3. Define your goal: Whole-home backup, critical-loads-only, or partial off-grid?

DoD describes how deeply the battery is discharged relative to its full capacity. A DoD of 100% means the battery is completely empty; 0% means it is fully charged. LiFePO₄ tolerates deep discharge far better than lead-acid — EGBATT rates its 6,000+ cycle life at 90% DoD, so you can safely use most of the stored energy every day.

SoC is the opposite of DoD. An SoC of 100% means the battery is full; 0% means completely empty. You can monitor SoC in real time through the EGBATT app (Bluetooth / 4G / WiFi) or your inverter's display.

Also called the power factor, C-rate reflects charge / discharge speed relative to total capacity. A 1C rate means the battery can be fully charged or discharged in one hour. A rate >1C (e.g. 2C) means less than one hour; <1C (e.g. 0.5C) means longer than one hour. For example, a 10kWh battery at 1C delivers 10kW of continuous power. Higher C-rates are useful for running large loads like air conditioners or pumps.

Our high-quality LiFePO₄ batteries deliver 6,000+ cycles at 90% DoD, which equates to over 10 years of daily charge/discharge. Even after 6,000 cycles the cells retain strong capacity, far outlasting typical lead-acid (300–500 cycles) or NMC lithium (1,000–2,000 cycles) alternatives.

kW (kilowatt) is a unit of power — the rate at which energy is produced or consumed (like speed in a car). kWh (kilowatt-hour) is a unit of energy — the total amount stored or used over time (like distance travelled). A 10kWh battery can deliver 10kW for 1 hour, or 1kW for 10 hours. When sizing, capacity (kWh) tells you how long you can run; power (kW) tells you what you can run at once.

It depends entirely on the load. As a rule of thumb, a 10kWh battery could run ten 100-watt light bulbs for ~12 hours without recharging — but a single air conditioner or electric heater can drain it in 1–2 hours. EGBATT's 15kWh (51.2V 300Ah) rack unit roughly doubles that runtime for the same load. Always size for your critical-load list, not your whole house, unless full-backup is the goal.

EGBATT wall-mounted and rack batteries suit both indoor and outdoor installation, depending on the IP rating of the enclosure. Common placements:

• Garage or utility room (indoor)
• Attic or under eaves (covered outdoor)
• Dedicated battery cabinet / rack in a plant room

Choose floor-standing or wall-mounted per your space. Keep the unit away from direct heat sources and ensure adequate ventilation. Our team will advise the right IP-rated model for your environment.

This varies with home size and personal preference. Most residential systems use 2 or 3 battery modules. The exact number depends on (a) how much energy you want to store and (b) which critical devices you must run during an outage. Because EGBATT modules parallel-connect, you can begin with 1–2 units and expand as needs grow.

Yes — but it requires careful planning and higher upfront cost. A true off-grid home needs:

• A sufficiently large PV array to recharge batteries even in winter
• Substantial battery capacity (often multiple 15kWh racks) to ride through cloudy stretches
• A backup source (generator or wind) for extended low-sunlight periods

EGBATT supplies complete off-grid, on-grid and hybrid kits, and our engineers can design a balanced system so you are not over- or under-provisioned.

It depends on three local factors:

• Electricity rate structure — with time-of-use (TOU) pricing, you can charge cheap at night and discharge during expensive peak hours
• Outage frequency — if grid outages are common, the backup value alone often justifies the cost
• Incentives — government tax credits, rebates, or feed-in-tariff changes improve payback

In areas with high rates or unreliable grids, ROI is typically achieved within 5–7 years. With EGBATT's factory-direct pricing and 10-year lifespan, the per-kWh cost of stored energy is among the lowest in the market.

Costs vary by capacity and brand, but a typical installed home battery module ranges from ≈ $5,000 to $10,000 (excluding potential solar-panel upgrades and installer labor, which differ by region). EGBATT's OEM/ODM model removes brand-markup layers, so dealers and end-users often pay significantly less per usable kWh than with consumer-only brands. Request a quote for your exact configuration.

Usually, yes — it depends on your current inverter:

• Hybrid inverter: You can typically add an EGBATT battery directly (DC-coupled) — the simplest path.
• Standard grid-tied inverter: You will need an AC-coupled battery system (the battery has its own inverter) or an inverter upgrade.

Send us your existing inverter model and we will recommend the lowest-cost retrofit path.

DC-coupled: The battery connects directly to the solar charge controller / hybrid inverter. Highest efficiency for new solar installations because energy isn't converted AC→DC→AC.

AC-coupled: The battery has its own inverter and ties into the home's AC panel. Ideal for retrofitting existing PV systems without replacing the original inverter.

EGBATT supports both topologies — tell us whether this is a new build or a retrofit and we'll specify the right architecture.

A practical guide:

• 5–15 kWh: Basic backup — lights, Wi-Fi, refrigerator, small electronics
• 15–30+ kWh: Medium-to-large homes, or partial off-grid capability

A common starting point is two EGBATT 5kWh or 10kWh modules (10–20kWh), expandable later. Pair capacity (kWh) with enough inverter power (kW) to start your largest motor loads.

Yes — but it depends on the inverter's continuous power output (kW), not just battery capacity (kWh). Starting a large central AC requires a high surge current; a soft-start kit or a larger inverter may be necessary. EGBATT batteries paired with a suitably sized hybrid inverter (check the inverter's surge rating, often 2× continuous for a few seconds) handle most residential AC units. Tell us your AC's starting watts and we'll confirm compatibility.

Modern residential batteries use LiFePO₄ chemistry, widely recognized as the safest lithium technology thanks to its high thermal-runaway threshold (it does not easily ignite even when punctured or overheated). EGBATT adds multiple safety layers:

• Self-designed BMS — over-charge, over-discharge, over-current, short-circuit, over/under-temperature protection, and active cell balancing
• Batch testing — no fire or explosion recorded in destructive testing
• Certifications — UL, CE, CB, CEC, CEI compliance for major markets

Yes. Charging LiFePO₄ below 0°C (32°F) can cause permanent damage. EGBATT's premium systems include a built-in self-heating function that safely warms cells before charging in cold climates. Optimal performance is always between 15°C and 25°C (59°F–77°F); our batteries are engineered for strong temperature adaptability, reducing the need for separate climate control.

They are virtually maintenance-free. We recommend:

• An annual visual inspection — clear dust and check cable connections
• Monitor SoC and system health via the EGBATT mobile app (Bluetooth / 4G / WiFi) or your inverter
• No watering, no equalizing, no acid handling — unlike lead-acid

Typical issues and EGBATT's resolution path:

• Capacity fade over time — normal aging; mitigated by our 6,000-cycle design and covered if within warranty thresholds
• BMS communication errors — usually resolved by firmware updates or a system reset; our tech team can push updates remotely
• Charge controller glitches — often fixed by re-matching the inverter protocol (RS485 / CANbus)

Hardware defects are covered under the up-to-10-year warranty. Our after-sales team provides remote diagnostics so most issues are solved without a site visit.

Lithium batteries must never go in regular trash — they pose fire and environmental risks. EGBATT and our authorized dealers operate end-of-life recycling programs that safely extract and reuse materials (lithium, iron, phosphate, copper, aluminum) in compliance with local environmental regulations. Contact your dealer or our support team for the nearest take-back point when your battery reaches the end of its long service life.