Turmera 12V Battery Box Kit Review: DIY 18650 Power Upgrade
What People Say
The quality of the plastic box is surprisingly good for the price, and the BMS works perfectly for my 3S build.
Finally, a cheap way to house my recycled 18650s! Everything fits together tightly and looks professional.
Great kit for the money. The nickel strips included were exactly what I needed to finish my solar project.
Problem & Solution
Are you tired of heavy, short-lived lead-acid batteries dying on your motorcycle or solar project? Traditional batteries are bulky, prone to sulfation, and lose charge quickly. Many enthusiasts want the efficiency of lithium but struggle with the complexity of building a custom pack from scratch.
The Turmera 12V Battery Storage Box solves this by providing a professional-grade housing kit. It takes the guesswork out of the assembly process, offering a secure frame for your 18650 cells, a pre-configured 3S 40A BMS for safety, and the necessary nickel strips for welding. It turns a daunting DIY project into a straightforward, rewarding upgrade that saves weight and boosts performance.
Who Is It For?
This product is designed for DIY electronics hobbyists, motorcycle enthusiasts looking to shed weight, and off-grid solar power builders. It is perfect for makers who already own 18650 cells and need a reliable, rugged enclosure to house a custom 12V battery pack safely.
It is also ideal for budget-conscious consumers who want to recycle used or reclaimed 18650 cells into a high-capacity power bank or starter battery for small engines, avoiding the high cost of pre-built lithium battery units.
Key Features
- 3X7 18650 Cell HolderProvides a perfectly organized, vibration-resistant structure for your battery cells.
- Integrated 3S 40A BMSEnsures your pack is protected against overcharging, over-discharging, and short circuits.
- Welding Nickel Strips IncludedSaves you the hassle of sourcing compatible conductive materials for assembly.
- Rugged Plastic EnclosureKeeps your sensitive lithium cells shielded from moisture, dust, and physical impact.
- Versatile 12V CapacityAllows you to build a pack ranging from 7Ah to 20Ah depending on your cell configuration.
- Lead-Acid Replacement Form FactorDesigned to fit standard battery compartments, making the switch to lithium seamless.
Pros & Cons
Pros
- Extremely cost-effective way to build a high-capacity battery.
- Includes all essential hardware for a clean, professional build.
- Significant weight reduction compared to traditional lead-acid batteries.
- BMS provides peace of mind for lithium cell safety.
Cons
- Requires a spot welder and basic soldering skills to assemble.
- 18650 cells are not included in the kit.
FAQ
No, the kit includes the housing, BMS, and nickel strips; you must provide your own 18650 cells.
The 40A BMS is suitable for smaller engines and electronics, but always check your motorcycle's cold cranking amp (CCA) requirements first.
Yes, for a secure and safe connection, spot welding the nickel strips to your 18650 cells is highly recommended.
Depending on the mAh rating of the 18650 cells you choose, you can easily configure this box to reach between 7Ah and 20Ah.
Final Verdict
The Turmera 12V Battery Storage Box is an exceptional value for the DIY community. While it requires a bit of manual labor and a spot welder, the result is a custom-built lithium pack that outperforms heavy lead-acid batteries at a fraction of the cost. If you have a collection of 18650 cells and want a professional-looking, safe, and durable housing, this kit is an absolute must-have.