Vexilar Batteries
Keeping Your Vexilar Running: The Right Battery for the Ice
Vexilar has been synonymous with ice fishing electronics since the brand began developing sport fishing technology decades ago. Today, Vexilar's sonar flashers — including legendary units like the FLX-18 and the cutting-edge FLX-38BB — are found on frozen lakes across North America and beyond. But even the most advanced flasher is only as reliable as the battery powering it. That's why Vexilar designs its own purpose-built batteries engineered specifically to match the power demands of their electronics.
Two Battery Technologies, One Goal: All-Day Power
Vexilar offers anglers a choice between two proven power solutions: traditional sealed lead-acid (SLA) and modern lithium iron phosphate (LiFePO₄) technology. Their 12V/9 Amp lead-acid battery is a dependable, time-tested option — a direct replacement that is compatible with all Vexilar ice fishing packs. It delivers the steady voltage Vexilar flashers need through long days on the ice and is available at an accessible price point for anglers who prefer the proven reliability of SLA chemistry.
For those looking to cut weight and speed up their charging routine, Vexilar's V-120L 12V Lithium Ion Battery uses Lithium Iron Phosphate (LiFePO₄) technology to provide steady voltage and quicker recharge times compared to sealed lead-acid options. This matters on consecutive fishing days when time between outings is short. Vexilar further backs the lithium unit with an FH1000 fuse holder mounted on the positive terminal — a practical safeguard that reduces the risk of dead shorts, protecting both the battery and the sensitive electronics connected to it, especially important in the cramped quarters of an ice shelter.
Purpose-Built Compatibility
What sets Vexilar batteries apart from generic alternatives is the ecosystem fit. These batteries are engineered as drop-in replacements for current Vexilar flasher packs — no adapters, no guesswork about connector compatibility, and no risk of mismatched voltage curves that can shorten the life of your sonar unit. When you pair a Vexilar battery with a Vexilar flasher and the included matched charger, you get a system that has been tested and validated together from the factory floor to the ice hole.
What to Consider When Choosing a Vexilar Battery
- Weight sensitivity: The LiFePO₄ lithium option is significantly lighter than SLA — a real advantage for anglers who hole-hop and carry their gear across long stretches of ice.
- Run time vs. recharge cycle: Lithium chemistry typically offers faster recharging and a longer overall cycle life, while lead-acid batteries remain a cost-effective and reliable choice for casual or weekend anglers.
- Safety: The FH1000 fuse holder on Vexilar's lithium battery provides an added layer of electrical protection in wet or confined environments.
- Compatibility: Both the lead-acid and lithium options are designed as direct replacements for Vexilar packs, ensuring plug-and-play convenience.
Whether you're replacing a worn-out battery heading into your next season or upgrading to lithium for the first time, Vexilar's battery lineup ensures your flasher stays powered through every bite-window of the day. Explore the full Vexilar brand page for the complete ecosystem of flashers, transducers, and accessories, or browse all ice fishing batteries to compare options across brands.