Manufacturer label these batteries as B-Grade because they didn't pass some strict quality tests.
Have positive tolerance of capacity around 5 – 10 %
are made „ on demand “. That’s mean all cells are from one series.
Are suitable for long-term projects and mass production, we can guarantee a long term availability.
Have the capacity with positive tolerance up to 1%
Are collected over time by the manufacturer and it may have an older date of manufacture. It is not possible to guarantee cells from one series.
Have a warranty for one year and it is not possible to extend it.
May have up to 15% lower lifetime than A-Grade. It always depends on the very piece.
It is not possible to guarantee long-term availability. It can unexpectedly drop out without the possibility of fast delivery of new pieces,they are not suitable for mass production.
Lithium Titanate (LTO)
Lithium based technology: Lithium titanate (Li4Ti5O12, referred to as LTO in the battery industry) is a promising technology for applications with high requirements like high charge and/or discharge current rate, long life time and extreme temperature conditions.
Safety, stability: LTO offers advantages in
terms of power and chemical stability. The LTO based batteries
have lower voltage: between 2.8V and 1.5V (the nominal voltage is 2.3V). Nevertheless, the
lower operating voltage brings significant advantages in terms of
Fast charge and discharge: Further, these batteries can be charged fast. Data shows that these batteries can be safely charged at rates higher than 5C. This means the battery can be charged in less than 10 minutes. The maximum charge and discharge rate is 10C so in this case it is 400A!
The LTO based batteries also have a wider operating temperature
range and a recharge efficiency exceeding 98%.
Wide operation temperature rage: LTO based batteries provide much better low temperature performance compared to carbon based batteries. The operation ambient temperature range is from -50°C to 65°C.
Extreme durable life-cycle: The large cycle life and high rate capability of LTO based batteries also brings unique advantages in applications where maximal cycle life is required. Using those cells propery you can easily exceed 30,000 cycles life-time.
The advantages of the LTO cells
professionally produced LTO (lithium titanate oxide) cells
stability during high current discharge
support for high speed charging – up to 10C charging
the discharge with long linear voltage level (2.4V to 2.0V)
minimal overheating or heat release during operation
GWL Cell Performance Monitor
Supporting LTO chemistry.
When exceeding the user-adjustable minimum or maximum of any cell,
closes or opens the output contacts for the relay coils.
It brings the lowest and highest cell voltages of the cells in pack to separate outputs (for monitoring measurements or for connection of the LED display or the communication module).
The multi-colour LEDs indicate the highest and lowest voltage cells and the operating status of the module.
It has very low power consumption and a built-in function of battery emergency disconnection from the powered system, including self-disconnection and shutdown.
It is part of the GWL/Modular series, i.e., it is an open-source solution that is and will be compatible with the related GWL products and with other commonly available components.
The quality of the design, versatility and technical support options make it suitable for industrial applications and sophisticated home installation solutions.
Yinlong’s LTO battery, with the characters of, fast charge in 6mins, wide temperature range ( -50° ~ 60°), 30 years’ service life, no fire, no explosion, high security and high efficiency etc., has gained the popularity from global famous partners.
LTO battery has been widely used in new energy vehicles and energy storage field of communication stations, grid frequency modulation, household, industry, rail transportation, military etc., and has broad market prospects and application values.