New designs solution for 1S Lithium recharging board with series connecting, it is not parallel recharging board The principle is that this series recharging board makes the batteries as battery series batterypacks And In parallel recharging, 1 of your batteries have problem or short circuits, then it will affect and do harm to others But it have not the problem using this series board, you can storage your batteries at the same time The recharging board have the voltages difference limited and safe problem For parallel recharging board, the voltages difference between batteries is high than 0.1Volt, so you canot recharging at the same time due to safe problem So this Series recharging board is better and safe Comes with 4.0mm banana plugs to male cable, which have fine conductivity and reliability, with a strong overloads bearing capacity You can easily use this series board to recharging / storage / discharge with monitorings each cell It can recharging-up to 6 lithium batteries at the same time when connecting with a balanced cable, effectively save your time