Solar Battery Storage - Solar Batteries for Sale

Solar Battery Storage Solutions for Installation Companies

sun.store is a professional B2B marketplace built for PV installers and contractors. Here you compare in-stock solar battery storage options from multiple suppliers in one place, see transparent availability, and select the configuration that matches your inverter lineup and project timelines. Listings are structured for pro buyers: clear usable capacity, voltage class, communication protocols, cycle life, and warranty terms—so you can specify fast and order with confidence.

For pricing, you view supplier offers side by side, request project-level quotes, and lock in conditions suitable for your purchasing cadence. Documentation—datasheets, manuals, and certifications—comes consolidated at product level to support design approvals and client handover packs. Logistics are streamlined with pallet and, where applicable, container options plus delivery coordination windows to the site or warehouse.

Whether you deliver residential upgrades or small commercial and industrial (C&I) systems, the marketplace helps you source solar batteries that align with your PV architectures: from single-phase hybrid retrofits to three-phase storage plants with higher power requirements and longer runtimes.

Types of Solar Batteries

Selecting the right battery for PV system work starts with cell chemistry and system voltage. Below are the core categories you’ll see across solar batteries for sale on sun.store, with practical context on when each fits.

LFP (LiFePO₄) Batteries

LFP (LiFePO₄) is the default choice for many installers due to its robust thermal behavior and strong cycle life. Compared to NMC (nickel manganese cobalt), LFP typically offers higher safety margins and flatter voltage curves under load, which supports predictable SOC estimation. In residential solar battery storage, LFP is favored for daily cycling, backup power, and dynamic tariff shifting. In C&I environments, LFP’s cycle throughput and lower degradation rate make it suitable for peak shaving and time-of-use strategies. If you need maximum energy density within tight space, NMC can be lighter per kWh, but LFP is usually the safer bet for broad deployment.

Low-Voltage Batteries

Low-voltage batteries generally operate in the 48–60 V class and integrate well with many legacy hybrid inverters and off-grid chargers common in retrofit markets. They are forgiving for installers familiar with DC cabling and offer straightforward serviceability. Pros: wide inverter compatibility, easier field diagnostics, and modular stacking at manageable current levels. Cons: higher DC currents for the same power can mean thicker cables and shorter allowable cable runs. For retrofits or small single-phase solar battery system additions, low-voltage is often the fast path to reliable battery backup for home and light commercial use.

High-Voltage Batteries

High-voltage batteries (typically 200–600 V systems) reduce current for the same power output, enabling thinner cables, smaller conduit, and improved round-trip efficiency in larger installations. They pair well with modern three-phase hybrid inverters and are common in C&I and high-demand residential segments. Benefits include better inverter efficiency at power, longer cable distances, and clean integration with high-power PV/hybrid stacks. Note commissioning: vendor-approved sequence (stack order, address DIP, CAN termination) is critical to avoid BMS faults.

Modular and Stackable Battery Systems

Modular and stackable battery platforms let you scale in defined kWh steps—ideal for phased upgrades or evolving load profiles. You can begin with a base cabinet or wall-mounted pack and add modules as the client adopts EV charging, heat pumps, or expands operating hours. Cabinet systems centralize DC protection and BMS access; wall-mounts minimize footprint where space is tight. Commissioning notes: match module firmware, observe manufacturer SOC equalization steps, and document serials for warranty registration and asset tracking.

Top Brands of Solar Battery Storage Available on sun.store

sun.store aggregates offers from leading global manufacturers, including Tier 1 options and other vetted brands suitable for EU markets. This gives installers more flexibility to build consistent solar storage portfolios across residential and commercial pipelines.

Tier 1 Battery Brands

BYD — Broad inverter compatibility and mature battery management system (BMS) tooling for residential and C&I fleets.

Huawei — Integrated ecosystem with hybrid inverters and monitoring for streamlined integration and commissioning.

PylonTech — Proven 48 V stacks with good module granularity for retrofit sizing and serviceability.

Sungrow — High-voltage cabinets designed for efficient three-phase hybrids and clean utility-event handling.

LG Chem — Established lithium-ion battery platform with stable performance and recognized warranty structures.

Enphase — AC-coupled architecture with module-level monitoring suited to microinverter sites and staged upgrades.

Other Reliable Battery Manufacturers

Victron Energy — Flexible control and multi-mode options appreciated in off-grid and hybrid applications.

GoodWe — Matching storage with popular hybrid inverters for compact single- and three-phase builds.

Growatt — Value-oriented solar energy storage with broad distribution and familiar commissioning flows.

FoxESS — Modular packs providing practical step sizes for residential and light C&I PV battery projects.

Solis — Pairing with mainstream hybrids and clear monitoring for everyday battery storage system deployments.

Alpha ESS — Integrated cabinets that emphasize straightforward install steps and stable operation.

Dyness — Popular stackable modules for low-voltage battery retrofits and incremental expansions.

BMZ — European manufacturer presence with industrial assembly expertise and systemized accessories.

HOPPECKE — Known for energy storage portfolios and robust enclosures in challenging environments.

SolarEdge — Ecosystem pairing with proprietary inverters and monitoring to align controls and service.

Key Features That Set Solar Batteries Apart

Cell chemistry (LFP vs. NMC): LFP prioritizes safety and stable thermal behavior; NMC offers higher energy density. Consider temperature performance, enclosure constraints, and client risk policy.

Cycle life & warranty: Look for throughput (MWh/kWh) and year coverage (often 5–10+ years). Check conditions: operating temperature bands, DoD limits (e.g., 90–95%), update requirements, and charge/discharge rates.

Usable capacity & round-trip efficiency: “Usable” excludes top/bottom buffers controlled by the BMS; typical efficiency ranges 90–96% depending on voltage class and temperature—key for ROI modeling.

Scalability: Modular/stackable growth, parallel cabinets, and DC- or AC-coupled expansion. Confirm max strings, module addressing rules, and allowed parallel counts.

Safety & protections: Integrated BMS with cell-level monitoring, overcurrent/overvoltage, short-circuit and thermal management, contactor control, and fault logging.

Environmental robustness: IP ratings for indoor/outdoor, clear ambient operating ranges, altitude derating, and condensation guidance. Ensure mounting surfaces meet load and ventilation requirements.

Integration: Hybrid/on-grid inverter compatibility lists, supported communication buses (CAN/RS485), firmware update paths, and monitoring portals. Validate grid-code profiles when required.

Installation practicality: Pre-wired bases, accessible fusing, front service access, lifting/moving instructions, and serial capture for warranty and asset systems.

Commissioning & service: App or local HMI tools, SOC calibration steps, equalization routines, event logs, and remote diagnostics availability.

Battery Applications for Residential and Commercial Projects

Residential (single-phase and three-phase):
- Self-consumption boost and battery backup for home critical loads with clear ATS/backup wiring.
- Off-grid or weak-grid operation using solar energy battery plus generator integration.
- Dynamic tariffs/time-of-use load shifting; pair with EV charging to shave evening peaks.
- Typical sizing: start 5–10 kWh and scale by module as load profile evolves; ensure hybrid inverter is on the approved compatibility list.

Commercial/C&I:
- Peak shaving and time-of-use arbitrage; size for target kW reduction and required kWh depth.
- Demand response and load management (where programs are available); confirm site metering and control interfaces.
- Power quality and resilience for critical circuits (IT, refrigeration, process loads).
- Integration notes: three-phase hybrids, high-voltage battery cabinets, and coordinated BMS/inverter firmware to meet operational windows.

Solutions for Installation Professionals

On sun.store, professional buyers manage the full purchasing workflow for solar battery storage:
- Bulk ordering & quotes: Add items to RFP, compare solar battery supplier offers, and request project-specific terms.
- Lead times & logistics: View availability, confirm delivery windows, and choose pallet or consolidated shipments. When applicable, container options are visible for volume buys.
- Consolidated documentation: Access datasheets, installation manuals, and certification summaries per SKU—ready for client packs and compliance checks.
- Serial-level documentation: Where provided by suppliers, you can obtain serial lists for warranty registration and asset tracking.
- Order tracking: Monitor order status from confirmation to delivery, with contact points for carrier coordination.

The marketplace focuses on procurement and fulfillment. sun.store does not provide design or engineering services; however, the team can clarify product features and answer selection questions so you pick the right battery for solar use case.

Certifications, Safety Standards, and Regulatory Compliance

Products listed present manufacturer documentation to help you verify compliance during specification and handover. For certified battery storage, look for references such as IEC 62619 (industrial Li-ion), UL 1973 (stationary batteries), and UN38.3 for transport of lithium cells/modules. Depending on market, check grid-code requirements at the inverter/EMS level (e.g., country-specific profiles) and ensure the battery-inverter stack is supported by the vendor’s compatibility matrix. Always incorporate appropriate AC/DC overcurrent protection, disconnects, enclosure/fire considerations, and installation clearances per local code.

Common standards and protections:
- IEC 62619, UL 1973, UN38.3; where applicable, IEC 62133-2 and IEC 62933 parts.
- CE marking and regional conformity documentation.
- BMS safeguards (cell-level monitoring, contactor control, fault logs).
- Overcurrent protection, fusing, and properly rated disconnects.
- Enclosure ventilation/spacing and mounting per manual; transport/packaging compliance.

Support and Resources for Installers

Every product page on sun.store provides transparent access to detailed datasheets and manuals so you can validate integration, efficiency, and warranty points before ordering. While sun.store does not offer dedicated technical support or formal installer training, the marketplace team is available to clarify product features and assist with selection questions during procurement. This ensures your solar energy storage choices fit the PV design, timeline, and delivery plan—whether you’re specifying a modular battery starter kit for a residential client or stacking on-grid commercial cabinets for a battery backup solution.