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Sol Stack Battery

21.5kWh 51.2v LiFePo4 Battery

21.5kWh 51.2v LiFePo4 Battery

$5,300.00 USD
$6,500.00 USD $5,300.00 USD
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Warranty

High capacity battery for larger homes and offices.  Can be installed in parallel with other lithium batteries of 17-22kWh.

  • Designed for tropical climate with waterproof/non-corrosive features.
  • Compatible with most modern inverters/charge controllers.
  • Manufactured on-island and supported island-wide.
  • Safe LiFePO4 chemistry, will not explode or thermal runaway.
  • Can be mounted outdoors (should not be exposed to direct rain)
  • Can be installed on wall, or floor mounted.

Data Sheets & Manuals

All SOL STACK battery configurations include bluetooth connectivity, digital monitor, and fast blow fuse for extra battery protection.

Compatibility & Common Questions

Sol Stack Batteries are compatible with most modern inverters designed to support a DC coupled battery (some net metering inverters are not compatible).

Our batteries are also compatible with other Lithium batteries, as long as they are LiFePO4 chemistry (most are).

See our Common Questions page for more about compatibility with systems, batteries, and installation options.

What's Included In the Package

Battery (42" tall, 24" wide, 10" deep)
Wall mount bracket
Cables, up to 3' long (longer with additional cost)
10 year on-site service warranty

Delivery & Installation

Delivery and expert installation is available island-wide for a fee of $200.  Typical delivery and install is within 5 business days of ordering, but can be longer for remote parts of the island. 

Pickup is available, with installation by a SOL STACK certified installer. 

Learn more about delivery & pickup options

5/10 Year On-Site Warranty

Standard 5 Year Warranty

(Included in price) Our standard 5 year warranty covers parts replacement for the full 5 year term, and on-site service for the first 30 months (service charge for repair visit in the second 30 months).

Extended 10 Year Warranty

Covers parts replacement for the full 10 year term, and on-site service for the first 5 years (service charge applicable for second 5 years).

Warranty Terms & Details

Hazard Warning

When properly installed and configured, Lithium (LiFePo4 chemistry) batteries are safe and stable for solar energy storage.

SOL STACK batteries should only be installed, configured and repaired by qualified technicians.

Do not ever disassemble your SOL STACK battery. Improper handling can lead to short circuits that can be DEADLY and cause serious property damage.

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