Those batteries seem to have a capcity of 3400 mAh or 3.4Ah
If you need more volts you connect the batteries in series.
If you need more amp-hrs you connect them in parallel.
Three batteries in series will give 11.1 volts (probably 12.6 when fully charged) and 3.4Ah
Six batteries arranged as two pairs of 3 will give 11.1v and 6.8Ah
You must be careful not to discharge LiPo cells too deeply or to overcharge them.
...R