The battery is really good! A great alternative to the Markenakkkus. Have only a simple charger, but he is quick to charge (a 4A charger) Keeps in a bugggy with powerful engine busts loose half an hour :-) Cons: The quality of the plastic parts could be better: the Schlumpf hose frayed after 15 trips (but helps tape :-)
Even if I torment the battery correctly and upload with full charging current, he does not capitulate. Full recommendation to buy !!!