Your so-called 3000 mA 18650 is no longer useful if the operating current is slightly higher, it cannot continue to supply power. It will need to be shut down for a while before it can be repowered to continue. Power source.
First of all, many high-brightness flashlights come with cheap, low-quality 18650 batteries. The capacity is seriously wrong and the battery quality is extremely poor. Third, almost all high brightness flashlights. and the batteries are equipped with it. Almost all of them do not contain overcharge and overdischarge protection circuits for the battery, especially when the battery is charged, this can only be judged from the brightness of the LEDs. after the LED lamp beads are obviously dimmed, the battery voltage is generally lower than 2.8V, and this voltage causedover-discharge damage to the lithium battery. Therefore, it is best to equip the high-brightness flashlight with a 18650. with an over-discharge and over-charge protection board. If you don't want the cost to be too high, you can buy disassembled ones online from Panasonic, Sanyo, etc. Samsung and other 18650s are much better than those from Panasonic. a certain popular brand. I use a Panasonic green 18650 3400 mAh with a protective plate. It has excellent battery life and can be charged or discharged at will without worry. The black circle at the bottom of the battery is the additional protection plate.
Which brand of 18650 flashlight battery is best?
The lower one is called the handle, which is mainly used to install the battery to prevent it from discharging while shooting
It has 4 functions: lift the body, increasing sensation and increasing battery life. As far as I'm concerned, the main thing is to increase hand feel. If the hand feel is sufficient, it is not necessary to equip it with a handle. If it's arranged vertically, it doesn't matter whether it's there or not. As for battery life, just replace the battery. You can't put it in your pocket. So in general there is no reason to equip the handle with the original one. The domestic 500 is quite sufficient. The grip I originally had was a D7000 and it felt really bad. After buying it, there was an external flash battery inside the handle, just 4 dry batteries, and the handle served as a pocket. Put 4 knots inside the outside flash. Battery pocket for rear view camera. In addition, it is better not to use 6 dry batteries for power when shooting movies. To be honest, they don't have 50% of the poweremergence of lithium batteries. Mine is still a Sanyo 2550. If it is better than green it will be even more detrimental. Another advantage of the handle is that 7-8cm is not an insignificant height, at least it has some advantage for tall tripod men. As for the design, when you find that the battery is discharged during a trip, the handle can be powered by 6 AA alkaline batteries. After all, non-rechargeable dry batteries are easy to purchase.
Which 18650 battery is best?
Samsung, Panasonic and other imported batteries are best. But it's more expensive. Generally speaking, household batteries have a relatively low capacity and lifespan.
The main element to identify a battery is not the brand, but the authenticity.
One way to identify authenticity: 18650 lithium battery. Manufacturers do not markusually not the capacity on the battery. The capacity can be seen on the battery cap or the color of the battery appearance. Generally speaking, the capacity of 18650 battery does not exceed 3000mah if it exceeds 3500mah, it must be a fake (fake) label.
Transformed into the authentic 18650 battery capacity indication. Most of the original imported batteries are not directly Specify the capacity
Japan Sanyo
White head, yellow head 1950mah
Blue head 2000mah
Red head 2200mah
Green head 2400mah
Light blue head 2600mah
------------------------------ - --------------- ----------
Japanese Panasonic
Blue cgr18650 1200mah
Pink cgr18650 1350mah
Light purple cgr18650H 1500mAh
** cgr18650hm 1600mah
Orange cgr18650hg 1800mah
Purple cgr18650HGL 1800mah
Light green cgr18650a 2000mah
Green clear cgr18650af 2050mah
Rede light cgr18650cb 2060mah
Light blue cgr18650c 2150mah
< p>Light blue cgr18650cf 2250mah18650D 2350mah
18650DA 2450mah
18650E 2600mah
--------- ------ ------------------------- -------------------< /p>
Toshiba Japan:
LGR18650P ------ 1600~1650mAh
LGR18650R ------ 1750~1800mAh
----- ------------------------- -------------------- ----- ---
South Korea LG:
Skin color S2 : Nominal capacity: 2150mAh Minimum capacity: 2200mAh Internal impedance: ≤ 65 mΩ
ICR18650A2 Gray: Nominal capacity: 2350mAh Minimum capacity: 2300mAh Internal impedance: ≤ 65 mΩ
A3 2400mah
Orange: 2600mah
------ ----- ------------------------ --------------------- --
Korea IIIStar
ICR18650-20 2000mah
Green leather ICR18650-22 2200mah
Blue leather ICR18650-24 2400mah
----- ------------------- ------------------------------- ---
How to judge the capacity of lithium battery Panasonicp>
Blue cgr18650 1200mah
Pink cgr18650 1350mah
** cgr18650hm 1600mah
Orange cgr18650hg 1800mah
Purple cgr18650HGL 1800mah< /p>
Light Green cgr18650a 2000mah
Light Red cgr18650cb 2060mah
Light Blue cgr18650c 2200mah
You need to use 18650 battery box with circuit boost to power lithium batteries or lithium electrical devices. I bought a 4 in 1 battery case and a green leather Panasonic 3100 mAh 18650 battery, a total of just over 200, with a capacity of 3100*4=12400mah. Of course, you have to multiply it by the conversion rate of 0.6 to get the actual effective capacity = 7440MAH, which is very simple to use. Charge yours, 7440/1430 = 5 times more, of course when the phone is off. If you consider the cost, you can also choose the Sanyo light blue 2600 mAh model, which is almost a third cheaper. Simply use the method above to calculatereal power. It is completely impossible for the current conversion rate to reach 85%. This violates the fundamental laws of physics, because a sufficient 3100 mAh battery must be boosted above 5 V compared to the 2.8-4.2 V of the charged lithium battery. it produces A voltage difference, it is as if the water is flowing to a lower place. During this process of increasing voltage, a large amount of electrical energy will be lost and the circuit will experience resistance. During the current transmission process, some will also be lost due to heat. Therefore, no matter what, for mobile power, it would be good if its conversion rate could reach 60%. Of course, some claim that the conversion rate is very high. Lower the discharge cut-off voltage below 2.8. V is very lethal to lithium batteries and can easily cause over-discharge of batteries.lithium batteries and damage them. My friend upstairs doesn't know much about the details, so I hope he doesn't jump to conclusions. I can't tell you where I bought it, otherwise it will be considered advertising and the post will be deleted I will look it up myself on Taobao and give you a physical reference of what I bought. I tried the image above. Baidu may have a bit of a problem today. 300K could not be downloaded. I bought a new original Panasonic 18650 green leather industrial battery and a new original Sanyo Dahongpao 2600 mAh 18650 industrial battery. few, the performance is very good, if there are other batteries or You can continue to contact me ask about power issues, I'm a battery geek.