Unlike lithium batteries, standard lead acid batteries have a big discharge capacity. Indeed, a much longer charging time must be accepted to prevent sulfatization wich would shorten the lifetime of the battery. The new lead carbon technology provides a solution for this problem: Using carbon additives guarantees much less sulfatization of the negative electrode. Thus, the battery can be charged up to 8 times faster than a standard lead acid battery. Modern lithium battery system can also be charged within less than an hour, but the discharge capacity is very low/ It must not exceed 50-70% of the battery capacity.