Bolt Down Lithium Compatible Fuse and Fuse Holder.
Why do I need one? One of the best things about lithium batteries is how powerful they are; however, this is a downside as well because normal fuses can’t protect against their extremely high current short circuits.
A typical Lithium battery can produce 10,000-15,000 Amps in a direct short circuit due to their very low internal resistance, with such a high current this will make typical fuses like mega fuses act like an arc welder and electricity will still flow through the fuse and cause a fire. Quality Mega Fuses have a maximum interrupting current of 2000-2500 amps, much lower than what a lithium battery can deliver.
Won’t my Lithium's BMS protect me? A high-quality BMS could protect you from small short circuits, but if you have a direct short circuit, it will blow all the MOSFETs in the BMS, and the current will continue to flow through the BMS.
Our Lithium-compatible fuses can protect up to 20,000 amps at 125V DC, so well within the max output spec of lithium batteries. These fuses have the same interruption current as Class T fuses; however, because they don't have the other characteristics that apply to lithium battery protection, they aren't Class T.
Our fuse holders are universal and will mount to any lithium battery provided the battery stud is between 3mm-25mm from the case.
