Can RD POWER SUPPLY charge batteries

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RD tech
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Can RD POWER SUPPLY charge batteries

Hello guys, how’s your days?

Today I want to show the application of our power supply. We can use DPS3005 as an example, it can provide up to 32V DC voltage and 5A current, you can use it to power on loads like LED lights, fans or somethings else. 

Recently some customer ask me if our power supply can charge their Li-ion battery, of course our DPS/DPH power supply can charge battery directly, and you don’t need to add a diode, there are two notes you need to know: our power supply can charge battery but they are not designed to charge battery professionally, and never reverse the input of the battery, you can see the bad consequence at the end of this article.

At present, our power supply can charge Li-ion battery, Lead storage battery, NiMH battery and so on(as long as it is a rechargeable battery and you set the right voltage and current). the charging mode generally adopts constant current and constant voltage charging, but does not mean constant current and constant voltage from the beginning to the end, but a limiting voltage constant current-----constant voltage limiting current- ---End progress.

We can use Li-ion battery as an example. At first, the charging current is constant, but the voltage of the battery gradually increases with the charging process. When the battery terminal voltage reaches about 4.2V (3.7V is the nominal voltage and 4.2V is the peak voltage), the constant current charging is changed to constant voltage charging.

There are some 18650 Li-ion batteries, the capacity of the battery we need to test is 1200 mAh, so when the current is reduced to about 12mA(0.01C), it is fully charged.

In addition, the national standard stipulates that the charging time does not exceed 8 hours, that is, even if the current has not reached 0.01C, 8 hours has arrived, and the charging is considered to be over. (The battery with no problem in quality should reach 0.01C in 8 hours, the battery with poor quality, it will be meaningless after waiting)

Under normal circumstances, the Li-ion charging rate of 0.5C is safe, so when the battery charging current is 600mA, it can be safely charged without reducing the performance of the battery pack and shortening the service life.

By the way, the charging voltage and current of other batteries are attached:

1 NiMH battery 1.2V/0.1C 

2 ternary lithium battery 4.2V/0.5C 

3 lithium iron phosphate battery 3.6V/1C

4 12V Lead storage battery 14.4V/0.1C 

For specific charging details, please refer to the manual for purchasing the product, whichever is the actual parameters above. 0.5C is safe without knowing the specific parameters of the product. (For reference only)

We set 4.2V, 0.6A to charge this 18650 Li-ion battery, be careful not to connect the counter electrode.

Through the picture we can see the whole charging process, the battery charging starts with a constant current icon CC, ends with a constant voltage icon CV,. It proves that our power supply can charge lithium batteries.

You can also use it to charge a 12V Lead storage battery,capacity is 69Ah,0.1C is 6.9A, we set 14.4V/5A(DPS3005 max output current is 5A) to charge it, and you can see a CC to CV progress.

Like what I said before:

You should be careful and never connect the counter electrodes, and if you do that, there are some consequences you can see :

A.Fuse burnt, red light on, you need replace a new fuse. 

B.Diode burnt, you need replace a new diode. 

C.MOSFET burnt, replace new MOSFET. 

D.ALL burnt, buy a new power supply. Safety first, don’t reverse the input of the voltage. 

but you can add a reverse protection when charge a battery, use a diode and a fuse less than 20A

 Thank you for reading.

If you have any interest in USB tester or power supply, please contact me
this is my shop on Aliexpress: https://rdtech.aliexpress.com/store/923042

Edited by: RD tech on 11/01/2019 - 23:26
RD tech
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hello guys, there is one thing I want to tell you: RD tech new power supply RD6006 has been released!!

   RD6006/RD6006-W Product link: https://www.aliexpress.com/item/4000282551930.html

   And we design two cases(S06A and S06D) for it, here is the link:https://www.aliexpress.com/item/4000284522671.html  

   

   Price: as old rules, when the new products are published, we will set the lowest price 

   RD6006: 47.68 USD (normal price 55 USD), RD6006-W: 51.18 USD (normal price 60 USD)

   S06A: 28.43 (normal price 33 USD), S06D: 18.81 (normal price 23 USD), Time is limit, please seize this chance.

   here are some introduction pictures, if you want to know more information about RD6006, I suggest you to check the product page, I write everything there, welcome to ask me if you have any questions.

   

   

If you have any interest in USB tester or power supply, please contact me
this is my shop on Aliexpress: https://rdtech.aliexpress.com/store/923042

RD tech
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In this video, we show some data you want to see 

we show battery charging operation and reverse connection first.

then we check the output voltage/current accuracy and output ripple. 100mV VPP

Finally we test the working temperature under full output(60V/6A)

room temperature 36.5℃, panel 62℃, AC-DC power supply 46℃.

RD6006:https://www.aliexpress.com/item/4000282551930.html

my email: 1749808860@qq.com welcome to contact

If you have any interest in USB tester or power supply, please contact me
this is my shop on Aliexpress: https://rdtech.aliexpress.com/store/923042