A: We mostly use lithium iron phosphate (Often called LFP - the 'F' stands for ferrous) as they offer the best cycle life and safety profile for their price
A: Independent analysis shows that LFP cells can last up to 15-20 years. We believe our batteries (if treated well) can last well beyond 10 years and up to 5000 cycles.
A: In 3rd party tested analysis, where the cells are tested under very strenuous conditions, we find that our Hardcore range of cells reached 80% of their nominal capacity after 4000 cycles (This is the battery that goes into our PolarLi units). Our Core range reach 80% after 2500 cycles. We believe that if treated well our Hardcore batteries should last 5000 cycles and our Core range should reach 3000 cycles. This is their 'primary life', but they will still have a full 'secondary life' for many more years / cycles after that.
Source: Agronomy Research 16(S1), 1178-1189, 2018 http://doi.org/10.15159/AR.18.026
A: Because we use the best components, and the most robust designs.
Our batteries are built to the highest standards and have the best performance profiles in the industry, but we are in the median price range. Contact us to find out why.
A: Lithium-ion batteries offer many advantages making them an ideal replacement for systems using lead-acid batteries. Li-ion cells have a higher cycle life than lead-acid batteries. Therefore although the initial cost can be higher, one should consider the cost of the battery over its full lifetime. Li-ion batteries do not suffer from memory effects, have a very low self-discharge rate, are highly efficient, can be charged and discharged at quicker rates and are lighter and smaller than other chemistries.
A: Most of the batteries we build can be charged in approximately one hour. This is not normal for large li-ion batteries and is only possible because we use the best cells and the best components, with the best designs.
A: Only if the cells are operated beyond their safe limits. We use the highest quality battery management systems with multiple layers of safety ensuring the system is monitored at all times and preventing any misuse of the battery packs. This ensures the utmost safety of all battery packs we design and build, and exceptional reliability and longevity of the Li-ion cells.
The particular cell chemistry that M+S use in their li-ion fridges and forklift batteries is considered the world's safest chemistry, manufactured by only one company world-wide, and M+S is the only company we know of who use it to manufacture these high-value products.
A: At M+S we don’t simply rely on manufacturer or supplier cell data. We independently test all raw cells to ensure they meet specifications and safety before we build them into a battery.
A: Many Li-ion battery pack suppliers/manufacturers boast cycle life data and warranties based on data provided by the cell manufacture. In reality, this data is often not accurate.
Supplier cycle life testing is done under ideal laboratory conditions and, even when performed correctly, is often not a true representation of actual operating conditions. For example, a key influence on Li-ion cycle life is the time the battery is stored at low and high voltages and temperatures. During cycle life testing the cells are not usually given adequate resting time to properly model such phenomenon.
M+S perform in-house cycle-life testing.