Good day everyone,

I recently purchased a “ZOP Power 7.4V 2200mAh 2S 35C Lipo Battery T Plug” for a project. I have designed a circuit to charge the battery, but now I am wondering if it is necessary to ensure the batteries are balanced when charging. I am using an 18V, 10W solar panel to charge my battery through a buck converter which controls the charging modes (CC/CV), the battery is connected to an RC car to extend running time. Through research, there are websites and forums with completely conflicting views, some say it is very important to balance charge batteries in a pack, whereas others state since there are only 2 cells present balanced charging can be ignored and the battery can be charged normally in series. 

There doesnt seem to much information on these batteries, but this website contains some basic information on it: 
<https://www.banggood.com/ZOP-Power-7_4V-2200mAh-2S-35C-Lipo-Battery-T-Plug-p-992114.html?cur_warehouse=CN#jsReviewsWrap>

I look forward to hearing peoples advice and opinions!