I will add that there are only two notable brands that sell trustworthy cells that offer pcb protection
Nitecore
&
XTAR
and only the button tops offer this feature
as an example…
(THIS IS NOT A RECOMMENDATION! please do your own research)
Here are the differences between these two:
Nitecore NL1832 18650 3200mAh Battery - Protected Button Top
|Nominal Capacity: | 3200mAh|
|Discharge Current: | 6A Max Continuous (PCB limitation)|
|Nominal Voltage: | 3.7V|
|Maximum Voltage: | 4.2V|
|Approximate Dimensions: | 18.6mm x 68.9mm|***********
|Approximate Weight: | 50g|
Nitecore NL1834 18650 3400mAh Battery - Protected Button Top
|Nominal Capacity: | 3400mAh|
|Discharge Current: | 6A Max Continuous (PCB limitation)|
|Nominal Voltage: | 3.7V|
|Maximum Voltage: | 4.2V|
|Approximate Dimensions: | 18.4mm x 69.1mm|*********
|Approximate Weight: | 47.4g|
Upon close examination, one would notice that by gaining +200mah, you also gain some height and risk not being able to fit these in the battery holder.
which is why im trying to so hard to go the extra mile to encourage you and others to study up on this subject.
CWPi states this about their battery module. It does mention 2 types of protection features as well as dimensions for size batts it can hold… This is important and pertinent information to not take lightly when looking for these types of cells as they may vary among manufacturers.
"We carefully designed the battery holder to make it more compatible with various 18650 battery sizes: Φ18±0.5mm diameter, 65-69mm length. The battery module has “Short Circuit and Reverse Polarity Protection” features, but you are still advised to purchase* the batteries from a reliable distributor and install them correctly.
Theoretically, you could use a single 18650 battery to power the system or replace the batteries one by one even when the system is in use. These actions can still cause system instability, and we strongly recommend replacing the batteries after the system is powered down. Please remove the battery if you do not use the device for a long time. Please consult the battery supplier for detailed 18650 safe usage rules, and please strictly follow them"