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Charging 18650 batteries
Charging 18650 batteries
During my journey I made several charging stations. The first one charged 10 batteries at once. The last one, I call him the beast can handle 40 18650s.
3 items return in every built: a charger module, the well known TP4056, an 18650 holder and a power supply. The TP4056 is dirt cheap, less then 0.5$. There's one little drawback. Don't reverse polarity of battery, the TP4056 is dead in a split second.
Do yourself a favour, use a fanless powersupply. A PC powersupply works too, but the noise will drive you crazy.
22P charger
22P charger
The built of a charger is straight forward. A row of x 18650 holders. Connect the TP4056 to the battery holder. Solder the positive and negative busbar from the powersupply to the TP4056. A little volt-meter gives you the chance to check the voltage after charging.
The beast
The beast
40P charger, charge 40 batteries with 0db noise. Find some detailed pictures below. I choose to glue the 18650 holders. The TP4056 just hoover over the wood. Don't worry they don't get hot.
Heaters
Heaters
One of the main reasons why I prefer to work with DIY chargers. Detection of heaters. 69°C or 156°F!!
Powersupply
Powersupply
A fanless powersupply can get hot during operation. Be carefull you don't get burned.
Little side project
Little side project
Portable charger, for charging at work or when on the road.
Charging on the go
Charging on the go
I travell 2 hours per day by train. Time to put some energy in these 18650s
I prefer to use the DIY chargers above commercial chargers like the LII-500 and others. The main reason is detection of heaters. I've seen many packs gone bad beacuse of one or more heaters. Investigation and repair is not an easy process
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