Ambrane India — Consistent battery backup after full charging

I bought Ambrane MiniCharge 20 because I spend long hours outside during field visits and needed something reliable. First week I noticed the battery indicator dropping quicker than expected after charging my phone twice. So I called customer support, who explained that the first few cycles sometimes need full charging and suggested letting it drain fully once before recharging. After doing that a couple of times, the backup seemed more consistent.