Outrun 2 SP + battery back up modification

[VIDEOTRONICSUK]

could this be used as alternative?

http://www.aliexpress.com/item/1PCS-5V-1A-Micro-USB-18650-Lithium-Battery-Charging-Board-Charger-Module-Protection-Dual-Functions/32467578996.html?tracelog=rowan&utalgorithmid=2&utcontentid=976&ck=in_edm_other&rowan_id1=eclc_en_7_1_en_US_2016-08-22&uttaskid=37002&rowan_msg_id=mo%40vUTT_37002_%24d8e5be9e45d14a098dccb93d534df2b5

 

[yellowmustard]

very nice system, i ll build one for my OR2 twin arcade...
do i need one system for each chihiro or can double final output wires to plug to my 2 chihiros?
thanks