Another huge advantage for the BYD product is their battery warranty which is 10 years / 20,000 hours - FULL battery replacement (with NO fine warranty print). This is important to point out because as other lift manufactures are playing catch up with BYD they are "trying" to introduce lithium-ion batteries, whereas BYD is using lithium iron phosphate batteries. To most people this does not sound like a big difference but realistically it's a day and night comparison with two of the largest factors being:

HEAT - In a nutshell lithium-ion is a good battery technology (due to it's weight and size charistics) for small portable devices that do not consume a lot of power (ie. laptops, cell phones, etc) but it's major weakness is that it does not manage it's heat well which can and will lead to a thermal runaway (hoverboards, samsung phones). Iron phosphate (LiFePO4) on the other hand (due to it's chemistry) has thermal stability and operates at a room temperature without issues.

DURABILITY - The durability/life of a battery is based on the number of charge/discharge cycles it will survive through. Iron Phosphate outperforms lithium-ion with over double the amount of charge/discharge cycles along with also providing a much longer self life (holding charge) if not being used.

I won't even get into all the safety/environmental differences other than mentioning that lithium-ion uses a fun little chemical called cobalt...

Due to these differences (and MANY more) it is easy to understand why we have yet to see any lithium-ion batteries that are even coming close to the warranty being offered by BYD.