Installing Batrium BMS on a Valence 12V LiFePo4 battery In this short article im going to cover the procedure in written text to cover the gaps i may have missed in the video.   Procedure: I first start with removing the cover of the battery itself. If you dont know […]

Install BMS on a Valence 12V LiFePo4 Battery

Balance leads how to Today we are going to quickly go into how to add balance leads to your battery pack. Just make sure you align the contact correctly like below. (Sorry for blurry image)

Balance leads how to

Building Opus charging station Material used: (All links below will take you to eBay) Watt/volt/amp meter  Opus Bt-3100 charger/tester Ac connector Cable Sleeve Heat shrink Plexi glass 2.5mm DC plugs Some mixed wires to connect it all together 12V 30A PSU  (Note that a better choice is a server PSU. […]

Building Opus Test/Charge station

Bluetooth speaker box build Today we will focus on building below bluetooth speaker box.  I will not go into details in this article today because i dont have the time. But i will list all essential stuff needed: 3s BMS: 3s BMS from Ebay Bluetooth amplifier 18650 cells. (I took […]

Build Bluetooth speaker box

1s active balancer review Today we are taking a look at the 1s balancer from And no did not get those for free. I payed for them myself! What is a balancing system good for? This is not an in depth analysis of how a balancer works nor why […]

1s modular active balancer reviewed and trashed!

Cable Slicer DIY Today we are going to take a look on how i did build my cable slicer.   Tools needed Drill Nuts and bolts razor blade Tools preferred and used by me Angle grinder Mig welder   How to I’m using 20mm*20mm iron pieces i found. I cut […]

Build your own cable slicer

Broken cell replacement Yes, this will happen eventually for everyone. If you, like me, using 2nd-hand cells we do not know how many cycles they all have done and they may go faulty on you. Today Im showing you how simple it is for me, with my design of bus […]

How to replace a broken cell

How you can utilize your excess energy from your solar eelectricity So what is this all about? First we start with the off grid systems. An off grid system generally means that we are isolated from the grid. We can take electricity from the grid but we cannot feed it […]

Utilize excess solar energy instead of wasting it! (DIY)

How to assemble your 18650 cells into a bigger pack When doing your power wall its important to get all into packs or strings depending on how you refer to it. Im going to use 14s80p. That is 14 packs of each 80 cells inside. That will form up a […]

18650 pack building HowTo

Automatic transfer switch – The one from China…   If you are like me and is working on solar electricity you want everything and little more. In this case you want fail safe so that if your inverter stops working you want your house to be switched over to the […]

Automatic transfer switch that you should avoid