Very satisfied with the performance. true 2A output, and 2A input too! so charging back the powerbank is very fast! and this module allows 18650 to discharge till 3V and shows 0%, and can go below 3V too. this is good because some other module cut off at 3.7V so not fully utilize the battery capacity. attached my 3d printed case you can find in thingiverse. need to modify make it wider. also be careful not to apply 5V at the battery side, module becomes crazy. Max 4.2.V only

Very satisfied with the performance. true 2A output, and 2A input too! so charging back the powerbank is very fast! and this module allows 18650 to discharge till 3V and shows 0%, and can go below 3V too. this is good because some other module cut off at 3.7V so not fully utilize the battery capacity. attached my 3d printed case you can find in thingiverse. need to modify make it wider. also be careful not to apply 5V at the battery side, module becomes crazy. Max 4.2.V only

Very satisfied with the performance. true 2A output, and 2A input too! so charging back the powerbank is very fast! and this module allows 18650 to discharge till 3V and shows 0%, and can go below 3V too. this is good because some other module cut off at 3.7V so not fully utilize the battery capacity. attached my 3d printed case you can find in thingiverse. need to modify make it wider. also be careful not to apply 5V at the battery side, module becomes crazy. Max 4.2.V only

Fast shipping and delivery at expected time. Although packaging was poor (no bubble plastic wrap) the products arrived OK. This is a very good dual USB mobile power bank board to create a DIY power bank to use with a set of 18650 Batteries or any old 3.7 Volts mobile battery. I created 2 DIY power banks using these different battery options (see photos). I made some measurements using a MADISTEK USB doctor module and results are excellent. At OUT mode the board can provide up to 2.0 Ams but also ... a great thing to point out is that it is also a fast charning module as when operates at IN mode it can also charge the battery pack with up 2 Amps current. A really great USB mobile power bank charging board and the 3 pcs pack is a great proce deal ! Really satisfied ! I will buy more !!!

Fast shipping and delivery at expected time. Although packaging was poor (no bubble plastic wrap) the products arrived OK. This is a very good dual USB mobile power bank board to create a DIY power bank to use with a set of 18650 Batteries or any old 3.7 Volts mobile battery. I created 2 DIY power banks using these different battery options (see photos). I made some measurements using a MADISTEK USB doctor module and results are excellent. At OUT mode the board can provide up to 2.0 Ams but also ... a great thing to point out is that it is also a fast charning module as when operates at IN mode it can also charge the battery pack with up 2 Amps current. A really great USB mobile power bank charging board and the 3 pcs pack is a great proce deal ! Really satisfied ! I will buy more !!!

Fast shipping and delivery at expected time. Although packaging was poor (no bubble plastic wrap) the products arrived OK. This is a very good dual USB mobile power bank board to create a DIY power bank to use with a set of 18650 Batteries or any old 3.7 Volts mobile battery. I created 2 DIY power banks using these different battery options (see photos). I made some measurements using a MADISTEK USB doctor module and results are excellent. At OUT mode the board can provide up to 2.0 Ams but also ... a great thing to point out is that it is also a fast charning module as when operates at IN mode it can also charge the battery pack with up 2 Amps current. A really great USB mobile power bank charging board and the 3 pcs pack is a great proce deal ! Really satisfied ! I will buy more !!!