I am looking for a 4 bay charger that when charging 4 18650 batteries , I get at least .5 amp to each bay? or 1 amp would be better ? My current Xtar charger drops to .2 amp when 4 batteries are installed.I would prefer a charger that has a screen that tells me what is going on .and not to expensive would be good too ! then one more question ,is it beter for battery life if charging is done at .2 amp or 1 amp ? thanks in advance