one of the best charger market

this charger to charge several modes depending on the state of the battery; the main ones:
normal mode; mode for lower ambient temperatures to + 5 ° C; mode for completely flat battery (acid stratification in the battery) power mode for a 100% charge maintains an already charged battery.

The normal charge cycle comprises 8 stages and passes from one to the other automatically. After a desulfation phase lead plates, a reduced current boot phase will detect if the battery is faulty; and gross load (main charge). The charger then switches to analysis phase to test the resistance to charge the battery. Finally, the charger switches to maintain mode and maintains the charge level between 95 and 100.
In the case of episodic use of the vehicle (a tractor in my case), you can leave the charger permanently. It will maintain your battery at its best (and thus prolong its life: given the price of the big battery, the return on investment of this charger will be quite fast)

Very easy to use after reading the leaflet
France ordered écoloboutique, the best position in price at the time of my order; Fast delivery, well packaged parcel

there is also a model for 6V battery (ideal for tension in this collection vehicles)