In Mobile Strike the bank generates coin for your base and increases your troop training speed.
Upgrading your bank, increases the coin production rate per hour and the total coin capacity of your base. Banks also increase your troop training speed by 1% per level (except the final two levels at 25% at level 21 and 27% at level 22).
Once your bank reaches level 21 it provides you with a 2% boost to all of your troops attack statistics.
A level 22 bank costs significantly more resources and time to unlock and provides a 3% boost to all your troop attack stats.
Coin is the hardest resource to obtain in Mobile Strike, therefore having a large number of banks is very useful. Coin is particularly important for some of the later research, where large amounts are required for each upgrade. You will need close to 500 million coin to unlock tier 4 troops!
The training speed boost will also come in very useful in the later game, when you try to build a large army, or rebuild after an attack.
The table below has the build cost for each upgrade level from 1 to 22, the build time (before boosts), buildings required and the power rewarded.
The figures in red have been extrapolated based on previous level data. Whilst the data should be broadly correct, the red numbers may differ slightly from the actual game figures.
We will update with accurate figures (in black) as we can verify them. Please feel free to leave any details you have from Mobile Strike by commenting below and we will update the data accordingly.