7 Best Solar Batteries of 2024

7 Best Solar Batteries of 2024

18 Nov 2022

Solar batteries are the most significant part of any solar PV system, though many homeowners overlook their importance. Solar batteries enable solar power consumers to maximize their solar panel investments by storing surplus energy. For many years, the best solar battery is essential for a constant, uninterrupted, and clean power supply. Thus, go for the best batteries for solar off-grid systems.

Here is our pick of the seven best solar batteries with pros and cons for 2024 to help solar power consumers make the right decision.

1. SUNPOWER SUNVAULT

SunPower is one of the best solar panel brands in Australia. Thanks to its premium quality products, SunPower SunVault solar backups have high-capacity LFP (Lithium iron phosphate) batteries that ensure improved efficiency for extended periods.

Pros

  • The impressive power rating of 6.8 KW – allows multiple appliances to run simultaneously.
  • The high battery capacity of 13kWh – provides power backup for long hours.
  • Perfectly suitable for SunPower solar panels.
  • A 10-year warranty – allows the user to get 4000 battery cycles.
  • High round-up efficiency of 85%.
  • Uses lithium iron phosphate (LFP) cell technology for longer battery life and improved safety

Cons

  • SunPower brand has not disclosed the battery discharge information.
  • SunVault power backups are exclusive to SunPower solar PV systems.

 

2. TESLA POWERWALL

Tesla is famous worldwide for its high-end electric vehicles, and in 2015 the enterprise chipped into the solar industry. The Tesla Powerwall solar batteries are also popular among solar power consumers due to enhanced efficiency and long warranty periods.

Pros

  • Tesla Powerwall 2 is a rechargeable lithium-ion battery – highly compatible with existing solar systems.
  • It has a thermal power management system that permits the preconditioning of the solar and batteries by boosting the charging capacity of the power bank in extreme weather conditions.
  • 10-year warranty that assures the solar bank maintains 80% energy capacity within the warranty period.
  • Tesla Powerwall batteries have inbuilt inverters with AC-coupled solar batteries.
  • It has a liquid cooling system that provides an improved performance between -4F to +120F temperatures.
  • The solar battery has a 100% depth of discharge.

Cons

  • Tesla Powerwall is not suitable for 3-phase connections as solar banks allow connection with one phase.

3. LG Resu Prime

LG has discontinued the production of solar panels, but it continues to produce its advanced range of solar batteries. The solar batteries manufactured by LG are known for their compact design and high efficiency, boasting a round-trip efficiency of 95%, which is among the best in the industry.

Pros

  • The company offers two high-quality solar battery models; RESU10H Prime and RESU16H Prime.
  • 10-year warranty.
  • Both models are budget-friendly compared to other solar batteries in the market.
  • LG Resu is portable due to its small size.
  • It has a passive cooling system for thermal management.

Cons

  • It is a DC-coupled solar battery that requires an additional inverter.

4. Goodwe Lynx U-Series Batteries

Goodwe is a renowned Chinese company that recently launched different varieties of lithium batteries for small commercial and residential solar modules. These batteries have a durable build quality and long life.

Pros

  • GoodWe’s new Lynx U Series home batteries are highly cost-effective and durable.
  • These batteries have an excellent 5.4kWh capacity.
  • It can connect with the 6 batteries in parallel and is scalable to 28.8 kWh.
  • The power backup is highly affordable.
  • Excellent warranty of 10 years.
  • It has an automatic reboot system.
  • The system comes with remote firmware for upgrades and diagnosis.

Cons

  • The Lynx U Series has no reported limitations.

5. Generac PWRcell

The Generac PWRcell features a protective cabinet that shields the solar batteries from outdoor conditions, potentially prolonging their life. Solar consumers have the option to expand the battery cabinet by incorporating extra battery modules or cells. With just one battery cabinet, users can access up to 18 kWh of storage, which can double to 36 kWh when you add another cabinet.

Pros

  • Flexible customization with up to 36 kWh of backup power storage
  • Impressive round-trip efficiency, among the highest on our list
  • Comes with a robust protective battery cabinet, suitable for indoor or outdoor setup, enhancing durability

Cons

  • Incompatible with certain existing solar power systems

6. Enphase IQ

Enphase produces an array of solar energy solutions, encompassing solar panels, microinverters, and solar batteries. Boasting a 96% round-trip efficiency and a 100% depth of discharge, Enphase delivers some of the most efficient batteries on the market today. The base Enphase IQ battery configuration furnishes 10.08 kWh of battery storage, with the potential for expansion.

Pros

  • NEMA 3 rated, approved for outdoor applications
  • Option for a five-year warranty extension
  • Widely available across the United States

Cons

  • Compatible with Enphase inverter systems
  • Warranty spans 4,000 cycles, less than the coverage of competing providers

7. SonnenCore+

Sonnen provides a range of battery models that can be tailored to your energy requirements and financial considerations. As an illustration, you can fine-tune the energy capacity of your Sonnen ecoLinx in 2 kWh increments, extending up to an impressive 30 kWh battery.

Pros

  • Personalized solar battery capacities extendable to 30 kWh
  • Batteries are fully recyclable at certified facilities
  • Compatible with both new and pre-existing solar panel systems

Cons

  • Bulkier and weightier compared to alternative solar backup batteries
  • Slightly reduced continuous power rating when compared to other batteries listed