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Vruzend DIY Solderless 18650 Battery Holder kit - High Power

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Out of stock



Stock update per June 2020.


New stock of the Vruzend kit versions 1.6/2.1 is expected later this year. Once the supplier is able to provide additional units this page will be updated. 


VRUZEND V2.0 - high power battery building kit

VRUZEND = Battery building made simple!

 No more spot welding… and no more soldering either!
The VRUZEND V2.0 is our high power battery building kit. The caps are identical in size and shape to our V1.5 kit, but the SS components are upgraded to copper coated with pure nickel for the highest level of conductivity and the best level of corrosion resistance.

Each V2.0 kit comes with enough components to build a battery with up to thirty (30) 18650 cells.

To build a battery with more than 30 cells, simply combine multiple kits together to reach any battery size you need.

Each basic kit includes:

60 cell terminal blocks with nickel coated copper alloy spring contacts (enough for 30 18650 cells)
60 screw terminals and nuts
70 pure copper bus bars coated in pure nickel for corrosion resistance and high conductivity
4 main wire clamps (for charge/discharge wires)
4 cable tie straps for securing the pack

 We recommend that for best results, you limit the current draw of the battery pack you build with Vruzend V2.0 battery caps to approximately 20 A continuous per cell. Current bursts of up to 25 A are acceptable, but for periods not exceeding 10-15 seconds. Higher current results in more waste heat being generated which can rob your pack of performance. That means that if you build a battery with 3 cells in parallel, you should try not to exceed about 60. Also keep in mind that if your pack is contained without air flow around the cells, you’ll want to use somewhat lower current per cell as well, as the kits are rated at 20A per cell with sufficient air flow. We believe that 20A per cell will be enough for nearly any project though, and few 18650 cells can even withstand higher current than that anyways!

Just snap together the VRUZEND bricks and then bolt together your connections. It’s really that simple!
Lithium battery packs for everything from electric bicycles and skateboards to home energy storage and electric vehicles are crazy-expensive, right?!
Why is that? It’s because making lithium battery packs used to require special tools and highly skilled workers to use them. But not anymore!
VRUZEND lithium battery building kits were designed to solve that problem. The plastic end caps slip tightly over the end of the most common lithium battery cell format, the 18650 cell. They can be snapped together like Lego™ bricks to create any size battery.
Then simply bolt the cells together using the supplied connectors and you’ve got yourself a custom lithium battery pack for a fraction of the price of buying an off-the-shelf lithium battery pack.
Spot welders are expensive. The good ones cost more than the price of most lithium batteries! Cheap ones are dangerous and prone to breaking when you need them most. Plus, spot welded packs can’t be opened up to replace a single cell if it ever goes bad. VRUZEND kits can!
With VRUZEND’s innovative DIY battery kits, you simply work with your hands! Snap together the terminal caps, add the connective bars and then tighten the nuts (ok, so you need a socket driver for the nuts, you got us… But it’s mostly tool free!)
VRUZEND battery kits are designed so that they can be opened up whenever you need if you ever want to expand your battery or replace a cell. Just pull the kit apart and the batteries are easily accessible.
The plastic end caps work like spring washers or nylock nuts by compressing under the force of the nuts on either end. This provides a counter force to the nut and helps prevent the nuts from loosening even in transportation applications that are prone to vibrations.
If you’re still worried about vibration loosening of the nuts though, there are other options as well. Loctite or other thread-locking compounds can be added to the nuts, or just a good old fashioned drop of hot glue on the nut will keep it from moving until you’re ready to remove it.
The VRUZEND battery building kits come with safety post on the ends of every cap to keep your battery terminals and conducting bars lifted off of your work surface while you’re building your battery. This helps prevent accidental short circuits during battery assembly. 
VRUZEND kits can be used to build batteries of nearly any size and shape. You are no longer limited to a small set of battery sizes. You can build the exact battery voltage and amp hour capacity that you need. And if you want extreme capacity, you can build a few battery packs and connect them in parallel, side by side, to create super high capacity batteries that are great for home energy storage.
For answers to some regularly asked questions can be found at:


Batteries are not included.

Take care when handling Lithium batteries - Lithium-ion cells and battery packs may get hot, explode or ignite and cause serious injury if exposed to abuse conditions.

 Lithium batteries Safety Information


Note on shipping on orders of the Vruzend kit to New Zealand: order of multiple quantity (more than two) of the kit to New Zealand may require additional shipping costs. We will apply the cost charged by Australia Post and send an invoice for the difference with the postage paid. If you wish to confirm the costs in advance you can send us a message.

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  • 5
    Awesome Kit for beginners & intermediates

    Posted by RandomTechGuyOnTheInterwebs on 26th Sep 2019

    Great kit to get into battery building. Having the pre-cut bus bars simplifies the steps. It's a shame the Barrel bolts isn't included in this, even though it's the 2.1 Vruzend Kit?? Comes with cable/zip ties. Look up Ebikeschool on youtube for battery building techniques. Max Amps 20 per cell end caps. ^This means your overall controller draw must not exceed 20A each individual cell cap. Parallel your batteries accordingly. **This is in conjunction with max amperage of your battery cells.