There is also a new charger to go along with the new LP-E4N and this is the only charger than should be used with the new battery. If an LP-E4N is charged in an LC-E4 charger you will not fully charge the battery; instead it will only reach around 90% charge so your capacity is reduced and it will not meet new safety regulations. However, an LP-E4 can be charged in the new battery charger with no problems.