I just purchased an Aspire Triton tank and Aspire CF Sub battery. The battery did not come with a charger. I see online that the Aspire charger has an output of 4.2V 1000mah. I'm using a generic charger that has an output of 4.2V 420mah. Will there be any issues with charging because of this? Will I still get a full charge? Could it harm the battery? Thanks. 