Discover the LTO cells with 40Ah/45Ah capacity from GS Audio. Whether as a replacement or upgrade, these Lithium Titanate Oxide (LTO) cells have a lot to offer. With dimensions of 160mm height and 66mm width, they are optimally sized and weigh just under 1.25 - 1.3kg. Their nominal voltage is 2.3 V and they can be used at an operating temperature of -55°C to 65°C. The optimal discharge and charge is at 40-45 A, but they are designed to handle higher currents as well. Note that the manufacturer's recommendations for charging and discharging protect the condition of the cells and extend their lifespan. Soon, these robust, high-performance cells could be part of your system.

Scope of delivery

• 6x LTO Round Cell 40Ah/45Ah

Data 40Ah cells

• Weight (kg) ~ 1.25
• Height (mm) 160 (202mm with thread)
• Width (mm) 66
• Depth (mm) 66
• Nominal voltage (V) 2.3
• Capacity (Ah) 40
• Max. Discharge Current (A) 400
• Optimal discharge current (A) 40
• Max. Charging Current (A) 400
• Optimal charging current (A) 40
• Operating temperature -55°C - 65°C
• Charging end voltage: 2.5V - 2.65V (manufacturer's specification 2.8V)
• Discharge cut-off voltage: 1.8V - 2.0V (manufacturer's specification 1.5V)
• "Maintenance charge: not recommended, can be set to 2.25V/cell on solar charge controllers."
• The difference between our specification and the manufacturer's specification results in a capacity difference of <0.5Ah. If you want to preserve the cells, please use our specifications and not the maximum values.

Data 45Ah cells

• Weight (kg) ~ 1.3
• Height (mm) 160 (202mm with thread)
• Width (mm) 66
• Depth (mm) 66
• Nominal voltage (V) 2.3
• Capacity (Ah) 45
• Maximum discharge current (A) 450
• Optimal discharge current (A) 45
• Max. Charging Current (A) 450
• Optimal charging current (A) 45
• Operating temperature -55°C - 65°C
• Charging end voltage: 2.5V - 2.65V (manufacturer's specification 2.8V)
• Discharge cut-off voltage: 1.8V - 2.0V (manufacturer's specification 1.5V)
• "Maintenance charge: not recommended, can be set to 2.25V/cell on solar charge controllers."
• The difference between our specification and the manufacturer's specification results in a capacity difference of <0.5Ah. If you want to preserve the cells, please use our specifications and not the maximum values.

Notes on LTO Cells

• The optimal operating range of the YINLONG LTO cells is between 2.0V and 2.5V.
• When charging the cells above 2.5V, the voltage increases more sharply, and above 2.6V it increases very sharply. The same applies when discharging below 2.0V!
• Therefore, the use of a good active balancer for LTO cells that are connected in series is also very important.
• "If very large currents (charging or discharging) are used, it may be necessary to further restrict the working area to avoid strong voltage spikes or drops."

Difference between: LTO - LiFePO4 Lithium batteries

• Lithium Titanate Cells (LTO)
  • + extremely long lifespan
  • + 10x higher cycle life than LiFePO4 cells
  • + extremely safe
  • + very high charge and discharge currents possible (5C-10C)
  • + less temperature-sensitive, can also be charged at <0°C
  • + now affordable, cells have become cheaper
  • + very high calendar lifespan (>25 years)
  • - LTO is more expensive than LiFePO4
  • - higher weight or less capacity
  • - lower cell voltage (2.3V), therefore more cells needed for the same battery voltage
• Lithium Iron Phosphate Cells (LiFePO4)
  • + cheaper price
  • + large variety of capacities and sizes
  • + higher capacity
  • + higher cell voltage (3.2V), fewer cells needed
  • - shorter lifespan
  • - not quite as secure as LTO
  • - max. charging or discharging currents are significantly lower (2C-3C)

Connection of the Active Balancer BMS

Revised contact surfaces for minimal transition resistance!
B-grade cells may exhibit optical defects.
"All cells are tested and have at least 40Ah and an AC-Ri of <0.5 mOhm - guaranteed!"

Possible Applications

• Solar storage (Extremely durable and safe)
• Car Hi-Fi (Capacitors unnecessary)
• Camper and Caravan (Temperature Resistant)
• Starter battery (Very high currents possible)
• boat battery
• USV

• 12V System - 6 Cells
• 24V System - 11 Cells
• 48V System - 22 Cells