The 3.7Ⅴ11A ternary lithium battery requires a 1050 watt solar panel.
The charging voltage of the 3.7V lithium battery is 4.2V. If it is too high, it will affect the life of the battery and even cause an explosion. The capacity can be very low or very high, mainly depending on the battery. size of your battery (i.e. charging capacity).
Why is the voltage of a 3.7V 20000mAh lithium battery charged by a 6V 25W solar panel only 3.87V
< p>When you use a solar panel to charge a 3.7V/6600mAh lithium battery, the charging current is generally 1-2A. Generally, the higher the charging current, the faster the speed charging is fast, but the power of the solar panel also needs to be larger. Since the end-of-charge voltage of lithium batteries is generally 4.2V, it is preferableto use a 5V battery panel to charge a 3.7V lithium battery using a solar panel. In this way, you only need to add a TP4056 lithium battery charging module. charging, and usually no additional voltage is required.▲Single cell lithium battery charging module.
The TP4056 charging module shown in the image above is suitable for charging a single lithium battery. Its input voltage range is 4-8V, charging end voltage is 4.2V, charging current is adjustable, the maximum. is 1A, and there is a charging indicator light and a full indicator light. The red LED indicator lights up when charging, and the green LED indicator lights up when fully charged.
The wiring method of the charging module is as shown in the figure above. Its In+ and In- terminals are connected respectively to the positive and negative poles of the 5V solar panel, and the BAT+ and BAT- terminalsof the module are connected respectively to the positive and negative poles of the 3.7V lithium battery. Since the charging IC is equipped with an anti-reflux circuit, no external isolation diode is required.
▲5V/2W solar panel.
The maximum input voltage of the above charging module is 8V, so a 5V solar panel can be used for charging, which can omit the voltage conversion circuit. Due to the large charging current, it is recommended to use 4-5 2W solar panels in parallel.
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Can the 3.7V lithium battery of the solar garden light be replaced with a 3.2V lithium iron phosphate battery?
Because it uses a 3.7V lithium battery.
The voltage is calculated according to the voltage of the blithium battery. Since the lithium battery is 3.7V, the voltage is only 3.87V.
Lithium batteries are a type of battery that uses lithium metal or lithium alloy as a negative electrode material and uses a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories, lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.
3.7 volt lithium batteries cannot replace 3.2 volt batteries. Since their upper limit voltage and lower limit voltage are different, they may not be fully charged during charging and may be overdischarged during discharging.
It is said to be a 3.2V battery. This type of battery is a lithium iron phosphate battery. This is usually a combinationination of several cells in parallel. The parallel voltage remains unchanged. It has simple and practical protection plates. There are many parallel solar iron-lithium batteries, and you can also choose ordinary large-capacity single-chip iron-lithium batteries (the new capacity of 30ah is about 39 yuan). If you use a 12V lead-acid battery, the solar panel cannot be charged (the output voltage of the solar panel is low), the battery voltage is high, and the LED will burn out when connected. The solar panels need to be modified and the lead-acid battery needs to be modified with a switching power supply to reduce the voltage, which is not cost-effective. Please give it a thumbs up if you find it useful