
A store for solar and battery innovators
Lowest priced products, highest quality, customer focused.
We customize solutions for large-scale solar, battery, and EV projects, serving DIY enthusiasts, prototype-building startups, and university researchers.
Featured products
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Busbar Kit for Nissan Leaf 51Vdc Battery Pack
Regular price From $77.00 AUDRegular priceUnit price / per$123.00 AUDSale price From $77.00 AUDSale -
Sodium Ion NFM Cylindrical Cells - Rechargeable Battery Cell
5.0 / 5.0
(1) 1 total reviews
Regular price From $27.00 AUDRegular priceUnit price / per$38.00 AUDSale price From $27.00 AUDSale -
Flexible Busbar for 280Ah Prismatic Cells, 200A
Regular price $7.00 AUDRegular priceUnit price / per$8.00 AUDSale price $7.00 AUDSale -
Compression Plates for Prismatic Cells, 2x
Regular price From $201.00 AUDRegular priceUnit price / per$310.00 AUDSale price From $201.00 AUDSale -
Daly BMS for Lithium Batteries - 16S LFP or 14S NMC
Regular price From $155.00 AUDRegular priceUnit price / per$186.00 AUDSale price From $155.00 AUDSale -
Battery Connector Lug, Waterproof, Quick Lock, 120/200A
Regular price From $39.00 AUDRegular priceUnit price / per$47.00 AUDSale price From $39.00 AUDSale -
Foam Dividers for Prismatic Battery Cells
Regular price $5.00 AUDRegular priceUnit price / per$7.00 AUDSale price $5.00 AUDSale -
LFP 18650 Cells - 3.2V, 3C-5C Discharge Rechargeable Battery Cell
Regular price From $47.00 AUDRegular priceUnit price / per$63.00 AUDSale price From $47.00 AUDSale -
Hydraulic Crimping Tool for Large Cables 8 AWG to 4/0 AWG (10-120mm2)
Regular price $172.00 AUDRegular priceUnit price / per -
BMS for LFP/NMC Battery Packs, Closed Loop Integration with Inverter
Regular price From $142.00 AUDRegular priceUnit price / per$0.00 AUDSale price From $142.00 AUD
Learn more on my YouTube Channel: @SolarJoeJoe
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Explore our Customer's DIY Projects
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🏕️ Michigan Off-Grid Cabin – DIY Solar + Batter...
JOSEPH O'CONNORHere’s a full breakdown of an off-grid energy system we helped design and troubleshoot for a cabin in Michigan. What started as a solar generator with lead-acid batteries eventually turned...
🏕️ Michigan Off-Grid Cabin – DIY Solar + Batter...
JOSEPH O'CONNORHere’s a full breakdown of an off-grid energy system we helped design and troubleshoot for a cabin in Michigan. What started as a solar generator with lead-acid batteries eventually turned...
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DIY Battery Pack with Sol-Ark Inverter, Whole H...
JOSEPH O'CONNORProject Details: LFP prismatic cells (REPT 280Ah) 16S2P configuration, 51.2V nominal, 560Ah (~28kWh Capacity) Nuvation BMS and custom stack switchgear – view options Compression end plates – view product Custom...
1 commentDIY Battery Pack with Sol-Ark Inverter, Whole H...
JOSEPH O'CONNORProject Details: LFP prismatic cells (REPT 280Ah) 16S2P configuration, 51.2V nominal, 560Ah (~28kWh Capacity) Nuvation BMS and custom stack switchgear – view options Compression end plates – view product Custom...
1 comment -
The RegenOasis - LAGI 2020 Fly Ranch Entries
JOSEPH O'CONNORAn oasis in the desert, the RegenOasis is a shade structure consisting of 91 solar Photovoltaic (PV) panels that also serves as a rainwater harvesting surface. The structure provides a...
1 commentThe RegenOasis - LAGI 2020 Fly Ranch Entries
JOSEPH O'CONNORAn oasis in the desert, the RegenOasis is a shade structure consisting of 91 solar Photovoltaic (PV) panels that also serves as a rainwater harvesting surface. The structure provides a...
1 comment -
Electric VW Beetle
JOSEPH O'CONNORProject in Bellingham, WA Nissan Leaf Gen 2 Modules 22S2P Module configuration 44 P-groups in series for 163V nominal Dilithium Design BMS with a Thunderstruck 180VDC charger See more projects here: Mac &...
1 commentElectric VW Beetle
JOSEPH O'CONNORProject in Bellingham, WA Nissan Leaf Gen 2 Modules 22S2P Module configuration 44 P-groups in series for 163V nominal Dilithium Design BMS with a Thunderstruck 180VDC charger See more projects here: Mac &...
1 comment
New Additions to the Store
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BMS for LFP/NMC Battery Packs, Closed Loop Integration with Inverter
Regular price From $142.00 AUDRegular priceUnit price / per$0.00 AUDSale price From $142.00 AUD -
Sodium Ion 160Ah Prismatic NFPP Cells - Rechargeable Battery Cell
Regular price From $1,090.00 AUDRegular priceUnit price / per$1,556.00 AUDSale price From $1,090.00 AUDSale -
USB Lithium Battery Charger
Regular price $8.00 AUDRegular priceUnit price / per$11.00 AUDSale price $8.00 AUDSale -
Battery Charger for LFP
Regular price $63.00 AUDRegular priceUnit price / per -
Hydraulic Crimping Tool for Large Cables 8 AWG to 4/0 AWG (10-120mm2)
Regular price $172.00 AUDRegular priceUnit price / per -
Battery Fuse, Class T, 110 to 400 Amp
Regular price From $148.00 AUDRegular priceUnit price / per

Learn how to build...
• Second Life EV packs
• DIY Power walls
• High Voltage, High Power batteries
• Mobile, RV and marine backup
• Electric bikes, go-karts
• Electric Cars, EV conversions
• Robots, Drones, and RC vehicles
Books & Resources
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Sale
Off Grid Solar Book
Regular price $16.00 AUDRegular priceUnit price / per$24.00 AUDSale price $16.00 AUDSale -
Energía solar autónoma - Off Grid Solar, Spanish Edition
Regular price $16.00 AUDRegular priceUnit price / per$24.00 AUDSale price $16.00 AUDSale
Testimonials for Off Grid Solar Book
"One of the best Solar Energy books of all time!"
- The BookAuthority
"Off Grid Solar is a great starter book for anyone who wants a better understanding of solar energy in general and the potential of "off grid" solar systems specifically."
- Amazon Review
"This is one of the first books on solar that I personally read and it has become required reading for our employees."
-Global Solar Supply
Popular Categories

DIY Battery Pack
Products to help you build your own battery pack. BMS, bus bars,...

Battery Cells & Packs
Battery Cells, Modules, or Packs

Rebuilding Nissan LEAF Batteries
How to Build a Lithium-Ion Battery System for less than $400 per kWh
Blog
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NFPP vs NFM: Which Sodium-Ion Chemistry Is Best...
JOSEPH O'CONNORSodium-ion batteries are quickly emerging as a cost-effective alternative to lithium-ion—especially for stationary energy storage systems. Among the various sodium-ion chemistries, two stand out: NFPP (Sodium Iron Pyrophosphate) NFM (Sodium...
NFPP vs NFM: Which Sodium-Ion Chemistry Is Best...
JOSEPH O'CONNORSodium-ion batteries are quickly emerging as a cost-effective alternative to lithium-ion—especially for stationary energy storage systems. Among the various sodium-ion chemistries, two stand out: NFPP (Sodium Iron Pyrophosphate) NFM (Sodium...
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Guide to Choosing the Best Battery Management S...
JOSEPH O'CONNORBattery Management Systems (BMS) are essential components in any DIY energy storage system, offering critical features like cell monitoring, balancing, and protection against overcharge and over-discharge. With so many options...
Guide to Choosing the Best Battery Management S...
JOSEPH O'CONNORBattery Management Systems (BMS) are essential components in any DIY energy storage system, offering critical features like cell monitoring, balancing, and protection against overcharge and over-discharge. With so many options...
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280Ah prismatic cell needs a new Name
JOSEPH O'CONNOR🔋 Calling All Battery Professionals — Help Us Rename the 280Ah Prismatic Cell! 🔋 The workhorse of the energy storage world—the so-called 280Ah prismatic cell—is overdue for a new name....
280Ah prismatic cell needs a new Name
JOSEPH O'CONNOR🔋 Calling All Battery Professionals — Help Us Rename the 280Ah Prismatic Cell! 🔋 The workhorse of the energy storage world—the so-called 280Ah prismatic cell—is overdue for a new name....
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Are Sodium-ion Batteries the future?
JOSEPH O'CONNORAre Sodium-ion Batteries the Future? Sodium-ion batteries are gaining momentum as a lower-cost, safer, and more sustainable alternative to lithium-ion. With the ability to reuse existing lithium-ion battery manufacturing lines,...
Are Sodium-ion Batteries the future?
JOSEPH O'CONNORAre Sodium-ion Batteries the Future? Sodium-ion batteries are gaining momentum as a lower-cost, safer, and more sustainable alternative to lithium-ion. With the ability to reuse existing lithium-ion battery manufacturing lines,...