Van Ceiling Panel – Part III

I continue where I left off in the previous article Van Ceiling Panel Part II. As a reminder, I use an automotive tweed protected against daily wear and UV, very similar in color and texture as the front seats of the van.

Before I can install the ceiling panel, I still have to finish and attach this black foam block above the sliding door, as well as a small cabinet that houses two switches and the gas heater control knob and a top cabinet.

Continue reading Van Ceiling Panel – Part III

DIY Lithium Battery – 2

This is one of a series of articles, describing my journey of assembling and installing Lithium battery cells, as part of my van conversion. I will likely make mistakes and may not even reach my goal of a cheap, yet large Lithium battery bank.
This is Part Two of my journey.

A short update

I finished top balancing my eight Lithium battery cells (3.2V @ 272Ah). Had them charging at 3.65V (max. allowed for these cells), most of the time at around 10A. The top balancing should finish when the amps on the power supply drop below 0.100A, but I disconnected the power at about 0.385A. At that time, checking the cell’s terminals with a high-quality multimeter, I saw a cell voltage of 3.653V, clearly getting above the allowed 3.65V.

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DIY Lithium Battery

Today, after a two month long wait, I received my Lithium battery cells form China. I’ve done period purchases through Alibaba and AliEpress now for the last 2 years, mostly below $20.00 each and haven’t had any issues so far. That gave me the confidence to try a $750.00 buy on Alibaba for eight 3.2V – 272Ah Lishen Lithium battery cells. I spent another $200.00 or so on other components, to make it all work. That included a good Multimeter, a small power station to top balance the batteries, heavy wiring, bus bars, switches, BMS’s and lots of lugs, bolts and nuts.

Continue reading DIY Lithium Battery

My Chinese Lithium Battery Cells. Yeah!

Today, after a two month long wait, I received my Lithium battery cells form China. I’ve done period purchases through Alibaba and AliExpress now for the last 2 years, mostly below $20.00 each and haven’t had any issues so far. That gave me the confidence to try a $750.00 buy on Alibaba for eight 3.2V – 272Ah Lishen Lithium battery cells. I spent another $200.00 or so on other components, to make it all work. That included a good Multimeter, a small power station to top balance the batteries, heavy wiring, bus bars, switches, BMS’s and lots of lugs, bolts and nuts.

Continue reading My Chinese Lithium Battery Cells. Yeah!

Building A DIY Lithium Battery

With the Van Build coming to an end, several important projects need some attention. Today I’ll start working on the battery bank of my solar system. Originally, and that was at the beginning of the van build, I installed two 6V Golf cart batteries. This netted me only ~100Ah at 12V nominal. Sufficient for only the most basic usage. At the time also more than sufficient, with only a minimal number of trips planned.

Overview

The main reason however, was that only 3-4 years ago, Lithium battery technology was hardly existent and very expensive. As I look back now, much has changed. We know now, that charging a Lithium battery at below freezing temperatures, is a big No-No, cell balancing must be part of the setup and many more issues are better understood. The development of low priced BMS’s (Battery Management Systems) has also made the DIY setup a possibility.

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12V Led Light Fixtures

Just received a dozen puck lights; these 12V LED light fixtures are the main lighting source inside the van.

puck lightsThe main advantage of these LED lights is their energy consumption; with about three watts per light, you can leave them on without worrying about a dead battery. 12V Led Light Fixtures While made in China, they seem to be of a fairly good quality and produce a lot of light. Continue reading 12V Led Light Fixtures

Solar Blanket And Day4 Tech Solar Panel Review


Click here for Part One of this video

This is a short review of two brand-new flexible solar panels. The Day4 Tech panel looks very similar to the current flexible panels, but uses two fine wire meshes to connect the individual solar cells together, one mesh on each side. They replace the bulky silver contacts, seen on regular panels.
While bending these panels, may still break some of these contacts, the panel’s power output is usually not affected, as many more contacts remain. Continue reading Solar Blanket And Day4 Tech Solar Panel Review

Solar Mumbo Jumbo

Why A 100W Solar Panel May Only Give You 50W

There is much to do about solar panels on RV’s. They are affordable, virtually maintenance free and easy to install. But do they deliver, what they promise?

Actually, most of these panels produce the indicated watts, with a big caveat: in summer under ideal weather circumstances. That’s fine for the average holiday traveler, yet poses obstacles for the more hardened RVer, who needs the power especially during the colder months of the year. Continue reading Solar Mumbo Jumbo