12V LTO Battery Pack with Heltec Module – Ultra Stable Power for Off-Grid & DIY Projects

    If you are looking for a low-maintenance, long-cycle power solution for your off-grid setup, RV, marine system or DIY energy projects, this 12V LTO (Lithium Titanate Oxide) battery pack is an outstanding option. Available in 30Ah, 35Ah and 40Ah capacity variants, it combines the legendary durability of LTO cells with smart monitoring via the Heltec module.

    LTO batteries stand out from other lithium chemistries for their extreme cycle life, excellent low-temperature performance and high safety. Unlike lithium iron phosphate batteries, LTO can operate reliably even in freezing cold environments, with minimal capacity drop. They support fast charging and have strong resistance to overcharging and short-circuit damage. This makes them ideal for applications that require frequent charge-discharge cycles and robust safety.

    This transparent demo pack uses 2.3V cylindrical LTO cells assembled into a 12V system. The acrylic enclosure lets you clearly view the internal structure, wiring, busbars and BMS/monitoring hardware. It comes pre-configured with a Heltec module for real-time battery data tracking: cell voltage monitoring, state of charge, temperature reading and communication functions. You can easily connect the module to your monitoring dashboard to keep track of every cell’s condition at all times. Key Features

✅ 12V nominal voltage, optional capacities: 30Ah / 35Ah / 40Ah

✅ Lithium Titanate Oxide (LTO) cells: ultra-long cycle life, >10,000 cycles

✅ Wide working temperature range, great performance in cold climates

✅ Built-in Heltec monitoring module for cell-level data acquisition

✅ Transparent acrylic housing (demo version) for easy observation of internal assembly

✅ Support fast charge & discharge, excellent safety characteristics

✅ Hand carry handle & heavy-duty terminal connectors for convenient installation

    Common Use Cases

• Off-grid small solar storage systems

• RV, caravan and camper auxiliary power

• Marine, boat and yacht low-voltage power supply • DIY energy storage, test bench & educational demonstration

• Telecom backup power and low-temperature industrial power  

    LTO is a premium chemistry for users who prioritize lifespan and reliability over raw energy density. With the Heltec monitoring module integrated, you get full visibility of battery health, which helps maximize service life and avoid unexpected failures. This 12V LTO pack is perfect for makers, system integrators and end users who want a trustworthy low-voltage power bank.