How do you solder 18650 lithium battery by soldering iron?

1 Clean the welding parts by a knife or rasper.

2 because tin anode materials difficult, the best wear away

3 in order to prevent heat damage to the battery, the battery to use wet cloth wrapped up

4 with solder wire against batteries with one hand, a hand up with enough temperature soldering iron welding, for the battery anode tin

The effect of the tin after cooling, how do you weld 18650 lithium battery by soldering iron: Lithium-ion battery has light weight, large capacity, no memory effect, etc, so it has wide application. Actually, many digital devices use lithium-ion battery as a power source, although its price is relatively expensive. Lithium ion battery has high energy density, and its capacity is 1.5 to 2 times of Ni-Mh battery with the same weight. It also has very low self-discharge rate. In addition, the lithium-ion battery has almost no "memory effect", and does not contain toxic substances etc., which is the main reason that it is widely used. Pay attention that the external package of lithium-ion battery is generally marked with English 4.2 V lithium-ion battery or 4.2V lithium secondary battery, 4.2 V rechargeable lithium battery, so the user must check the battery appearance while buying battery to prevent buying the wrong battery as cadmium nickel, nickel-metal hydride battery because they don't see the battery type. As we know, 18650 battery has steel shell, and there is no battery spot welding machine. It is difficult to use soldering iron for welding. Now we have powerful battery flux, which can help ordinary electric welding 18650 battery. However, this kind of strong flux is corrosive, not just for the battery shell and the anode corrosion, but also the welding head. So, without battery spot welder, how can we weld 18650 batteries and battery pack? It is believed that many people tend to use Goot strong flux, to weld battery. It can also be used for welding stainless steel. In order to add protection plate, use flux and soldering iron for welding, but the battery anode is rusted soon! One of my welding head has also been eroded. It is said that copper head can solve this problem. Without strong flux, only the soldering iron and tin can weld 18650 battery. The soldering iron is a very old wooden iron with 100 W. Maybe nobody has seen this kind of iron. It is said that it contains silver and the welded solder surface is very nice. One is for Sanyo 3350 MAH, one is for Wick 200MAH 5C discharging edition (for testing). First clean the oxide layer between two pole pieces. It had better using alcohol to clean the cell poles, and then add a little bit of rosin alcohol solution. Use soldering iron to solder rosin to the battery for a few times, grinding solder touch on the battery electrodes. tin battery anode and cathode has bright spot. In order to test the method to be effective to more 18650 batteries, take other two batteries to test again. The following is the power battery of Lishen with 2500 MAH. Grind the battery electrodes for tin. It is used for torch before, and test over-discharging. No matter how low the voltage is, even discharge to 1 v, the voltage still can back up to 3 V. The battery is good after several experiments. It also has welding test. The battery used to have protection board, and the poles had a spot welding of nickel sheet. At this time, only tin anode nickel piece on the outside. Those two tinned batteries don't wash the rosin after welding. Use alcohol to wash the rosin on battery electrodes, and you can see it tins in good shape and bright spot. Then you can begin to assemble the battery pack. Here are five Sanyo 3350 MAH batteries. Assembling battery also needs barley paper for insulation on electrode processing. You should pay more attention to the anode. Auxiliary materials include double-sided adhesive and CAD drawings. TB has obliged battery insulation gasket, and you can also purchase on market, or do it by yourself. A piece of 1.7 mm thick barley paper is only 3 yuan. If you can't find nickel in hand at that time, replace for copper. The thickness of copper is 0.3 mm, and has better overcurrent capacity than nickel with thickness of 0.1 mm.

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