Best lipo battery for lipo mod

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So I have a lipo mod coming and I have a MaxAmps 4s 2800mAh coming with the mod but I'm looking to get another battery for a backup just like I have a bunch of 18650 always in the charger and in a quad cell case (I have like 4 cases always full) and I'm just tired of always charging batteries and having to carry extras just to make sure I have enough battery power to get me through my day (I vape high wattage so it drains my batteries quick in my unregulated n mech boxes) so I'm going lipo....

Best lipo battery for lipo mod

Best lipo battery for lipo mod