Features
A high-capacity LiFePO4 expansion battery designed specifically for the Apollo 5K ecosystem. It seamlessly integrates with your primary unit, increasing total storage while maintaining system stability and safety.
With its own integrated Battery Management System (BMS), this expansion battery can also function independently when paired with compatible charging sources.
Why It Matters
When outages last longer…
When loads increase…
When your lifestyle grows beyond your original setup…
You don’t replace your system.
You expand it.
This battery allows you to:
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Increase total energy storage without rebuilding your system
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Extend runtime for refrigeration, tools, lighting, or essential circuits
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Scale toward partial or full-home backup
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Add redundancy and stability to your power architecture
The modular approach keeps your investment future-ready.
Built for Longevity
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5,376Wh Capacity
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LiFePO4 Chemistry (Lithium Iron Phosphate)
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6,000+ Life Cycles
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Advanced Integrated BMS
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Stackable Design
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Seamless Apollo Integration
LiFePO4 is known for its thermal stability, deep cycle durability, and long operational lifespan — making this a long-term infrastructure component, not a short-term accessory.
Scalable Configuration Options
Designed with flexibility in mind:
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Stack up to 3 Expansion Batteries securely on Apollo wheels
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Or stack 1 Expansion Battery + 1 Apollo unit
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Place expansion batteries adjacent to the Apollo using the included battery cable
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Add up to 5 Expansion Batteries to a single Apollo system
Whether you prefer vertical stacking or side-by-side configuration, the system adapts to your space.
Standalone Capability
Unlike many expansion modules, this battery includes its own BMS and can operate independently.
It can be charged and utilized with:
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Solar Charger
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Wind Charger
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AC Charger
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DC Charger
This opens up possibilities for:
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Dedicated solar storage bank
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Auxiliary off-grid power reserve
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Workshop or shed energy storage
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Backup redundancy module
Ideal For
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Off-grid homes building toward larger storage capacity
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Backup power systems requiring extended runtime
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Tiny homes or cabins expanding energy usage
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Overlanding or mobile setups scaling upward
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Homeowners who want modular, expandable infrastructure
SPECS
SIZE
| Product Size | L 23.2 in x W 14.6 in x H 11 in (11.3 including feet) (L 589mm x W 371mm x H 280mm [287mm including feet]) |
WHAT'S INCLUDED
Battery Cable (Red Label)
WARRANTY & SHIPPING
Warranty
All Hysolis products are covered under our Warranty.
Your Apollo system comes with a 5-year Warranty. All other Solar Generators come with a 3-year Warranty on the battery and a 2-year warranty on all other components. Solar Accessories come with a 1-year Warranty. Solar Panels come with a 25-year Warranty.
The warranty doesn’t cover any product that has been inappropriately disassembled, modified, damaged, or otherwise mistreated.
Lost or Damaged Products
If the product is not delivered to the address listed on the order or is lost in transit, the customer must notify Hysolis immediately.
If the product received is damaged or appears to be damaged, the customer is advised to take pictures and videos of the damaged product and if possible, refuse shipment from the carrier, citing damage. The customer must notify Hysolis within 48 hours of delivery of any damage to the product. Email support@hysolis.com with photo and video evidence of the damaged product.
Returns
Products purchased from Hysolis can be returned within 30 days of delivery. We will not accept returns beyond 30 days of delivery. This policy excludes returns made for defective items, which may be accepted after inspection and approval by Hysolis.
The customer must initiate the return with the Hysolis Support Team within 30 days of delivery. Proof of purchase must be provided by the customer to begin the return. Returns will be accepted for items in unused and undamaged condition and in their original packaging.
For Hysolis products purchased from authorized sellers, please contact the seller where the item was originally purchased.
Shipping Costs
Shipping costs for product returns will be covered by Hysolis if the product was damaged during shipping, due to a product defect, or in a case where the incorrect product was delivered. The customer is responsible for all return shipping costs when the product is returned under any other conditions. Any shipping costs the customer is responsible for will be deducted from any refund issued to the customer by Hysolis.
Refunds
For returns related to customer preferences (i.e. not related to damage, defects, or incorrect product delivered) made within the 30-day return period and once received, Hysolis will issue a refund within 5 – 10 business days. Hysolis will notify the customer once the refund has been processed. All returned items will be inspected to ensure they comply with Hysolis’s return policy.
This policy applies only to Hysolis products purchased in the United States through authorized sellers.
All sales made outside the United States are final.
