So the characteristics are tested into three categories:
But the cells produced are NOT all the same. Remember - NEVER buy memory or batteries on ebay direct from china!īattery manufacturers produce cells to specific intended characteristics. However, you DO need to buy from a reputable source. At least you will then be using balanced cells. But for rebuilding a laptop battery, unless you have a good understanding of 18650 cells and good ability to match cell charcteristics, don't attempt it, the results will be a big disappointment and could be dangerous.īetter would be to buy a new laptop battery of the same voltage and with the same number of cells and swap the cells into your old battery case.
It's very temping to reuse cells, I do it myself on less critical applications using 3 or 4 cells. It becomes a visious circle and the usable time on the battery will continue to deteriate. And they will not get any better, only get worse. Putting together a battery of cells without matching (balancing) them may result in some cells rising in temperature these wil be cells with the poorest characteristics.
If the cells got too hot to touch (more than 50C), then you have already scrapped them, chuck them for recycling. Would anyone use a 24v truck battery charger to charge a phone battery? Is it any surprise that everything overheated? You used the "module" (intended for charging a battery to about 19v) to charge individual cells of 3.6v! When two or more cells are connected together they become a BATTERY.Ĭell or battery overheating is an indication of improper charginng or discharging. So you have a single 3.6v 18650 in your hand - that is not a battery, it's a CELL. You stated, "I used the module that comes with the power bank to charge the batteries separately". Mixing different makes of cells within a battery is almost certain to create serious problems and unless you can be sure they are all of the same basic type and chemistry - should NOT even be considered - it could be dangerous! There are many different types of 18650 cells with different chemistries for differnet intended purposes.Ī battery must be built with cells of matched characteristics internal resistance, charge retention, charge and discharge capabilities etc. Package Dimensions: 4.7 x 2.8 x 2.What you are attempting is dangerous practice. Do not attempt to charge primary cells such as Alkaline, Zinc-Carbon, Lithium, CR123A, CR2 or any other unsupported chemistry) STRONG PRACTICALITY: USB port battery charger, battery charger operating voltage is 5V, Can charge for different types of DC 3.7V cylindrical lithium batteries 10440, 14500, 16650, 14650, 18350, 18500, 16340, rechargeable batteries.(For use with IMR/Li-ion Rechargeable batteries only. SAFETY ASSURANCE: Comes with special charge and discharge management circuit with multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the battery, which makes users using the product without any safety concern CHARGING DISPLAY: This Battery charger with Red/Green LED light display, And the charger will display the status of each rechargeable battery when charging, Automatically detects battery power status and displays charging progress, and automatically stops charging when completeĤ BAY INTELLIGENT BATTERY CHARGER: Has four independent charging channels, Automatically/manually select the optimum charge current, Supports 4-channel simultaneous independent charging without affecting
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