Works perfectly. Going to make life a lot easier in the future. Using it for a wi-fi ups from a lithium battery and had no problems with efficiency. You just have to make sure you battery or power bank can supply 2amp plus a bit. Thank you

Works perfectly. Going to make life a lot easier in the future. Using it for a wi-fi ups from a lithium battery and had no problems with efficiency. You just have to make sure you battery or power bank can supply 2amp plus a bit. Thank you

Works perfectly. Going to make life a lot easier in the future. Using it for a wi-fi ups from a lithium battery and had no problems with efficiency. You just have to make sure you battery or power bank can supply 2amp plus a bit. Thank you

haven't tested them yet. looking good so far.

haven't tested them yet. looking good so far.

haven't tested them yet. looking good so far.

Qualité acceptable, semble robuste, conforme à la description, emballage antistatique B-D

Qualité acceptable, semble robuste, conforme à la description, emballage antistatique B-D

Qualité acceptable, semble robuste, conforme à la description, emballage antistatique B-D

Fast delivery under 4 weeks. Item was well packed. Electronic step up/down converter.

Fast delivery under 4 weeks. Item was well packed. Electronic step up/down converter.

Fast delivery under 4 weeks. Item was well packed. Electronic step up/down converter.

Fast delivery under 4 weeks. Item was well packed.

Fast delivery under 4 weeks. Item was well packed.

Fast delivery under 4 weeks. Item was well packed.

Small pieces but powerful effect, purchased again and waiting to receive. Thanks Banggood.

Small pieces but powerful effect, purchased again and waiting to receive. Thanks Banggood.

Small pieces but powerful effect, purchased again and waiting to receive. Thanks Banggood.

Aus den 3,7 V vom LiPo_Akku kann man einfach hochtransformieren und die Ausgangsspannung ist sehr stabil.

Aus den 3,7 V vom LiPo_Akku kann man einfach hochtransformieren und die Ausgangsspannung ist sehr stabil.

Aus den 3,7 V vom LiPo_Akku kann man einfach hochtransformieren und die Ausgangsspannung ist sehr stabil.

Working great

Working great

Working great

Works fine

Works fine

Works fine

The module works well with a 4V input and up to 18V output. I did not get 28V but luckily I do not need it. I have only used 1 module and will update the review as I use the others. I used it with 12V 1.3 A output to date.

The module works well with a 4V input and up to 18V output. I did not get 28V but luckily I do not need it. I have only used 1 module and will update the review as I use the others. I used it with 12V 1.3 A output to date.

The module works well with a 4V input and up to 18V output. I did not get 28V but luckily I do not need it. I have only used 1 module and will update the review as I use the others. I used it with 12V 1.3 A output to date.