12v rechargeable lithium ion-li ion battery pack deep cycle
Coremax Technology is a custom 12 volt li ion battery manufacturer based in China. Most of the time we keep a quantity stockof 12v lithium battery packs, capacity from 3000mah, 5000mah, 30ah, 50ah, 20000mah, Battery pack made by 18650 ,26650,32650 cells or prismatic cells.with PVC or Plastic casing or metal casing, they are widely used for Marine, CCTV Cameras, LED lights, Mobile Phone Spammer, Solar Power system, Electric Garden Sprayer, Electric Lawn Sprayers, Handheld Electric Airless Sprayer, and mechanical cotton picker .
We use the most advance lithium deep cycle battery technologies to make the 12v li ion battery pack just ensure that you can get the highest quality and make a most stable product with coremax 12v li ion rechargeable battery pack, we work with you to do the label, shrink wrap, custom terminates or encloses in plastic.
We focus on the best and cheap small design 12v DC battery pack products with 12v 4s bms or 12v 3S BMS that are the most cost-effective, environmentally safe and exceed all of their specifications, we will never let you down, you can check more of our certificates including MSDS UN 38.3, IEC, KC, etc.
Coremax devoted in providing professional high quality lithium ion battery pack solutions that make of standard 12v lithium ion battery, that battery packs are very good at fitting applications requiring high power energy density, small size, lightweight, free-maintenance and free-pollution. Every Li ion battery packs CMX Battery designed are built in mandatory battery management system(BMS) to insure batteries pack operating in safe environment. 10 engineering fellows in R&D department are also capable to design BMS functions that remote monitoring the li ion battery back system operating based on your any special requirements.
In Stock 12v li ion battery
Since the 12v li ion battery pack is popular in many field of application like CCTV, Camera, RV, Marine. Coremax have already designed many types of battery packs for your selection. they are specially designed for powering the system device which use 12v dc battery.
- Fit for Wireless Transmitter,CCTV camera, LED lights,Mobile Phone Spammer,Solar Power system,Emergency power system, Electric Garden Sprayer,Electric Lawn Sprayers,Handheld Electric Airless Sprayer, Electric Garden Tiller Cultivator and Mechanical Cotton Picker,ECG Monitoring Device
- Optional design Battery Power On/Off switch and Remaining Power indicator
- Different capacity available like: 12V 2000mAh, 3000mAh, 5000mAh, 8000mAh, 10000mAh and 12000mAh, 20000mAh,30000mAh some would also call them 12V 5Ah,12V 10Ah, 12V 12Ah. 12V 30Ah, 12V 40Ah
- Many regular 12v battery pack models In stock for your selection
- Different casing style : PVC Casing, Plastic Casing, Metal Casing available
- Support fully Custom Design with low MOQ.
12v lithium battery pack Design
Working with Coremax, we provide design services from early design for our customers, Normally we use 12v 4s bms If apply with IFR18650 or any other LiFePo4 battery cells. If apply with ICR18650, or other NCM lithium polymer cells, we can apply with 3S BMS. we work hand in hand with you, just put your idea to test the market and the final mass production. We will provide Industrial design suggestions, battery type selection to architecture guidance, simply to save your time and money.
Our Major 12v rechargeable battery pack products will be made by 18650 cells, prismatic LiFePo4 cells and also lithium polymer cells. Besides the 12v battery pack, We can provide related 12v Lithium battery charger if required by your side. At very low cost.
Coremax’s R&D Team and engineer in li-ion battery pack for more than 15 years. The expertise and experiences in manufacturing and design will help you get a most favorable pack.
Simply Send us an email to start custom make your 12v battery pack.
List of Coremax 12v Lithium ion battery Packs
Caution About lithium battery
- Lithium ion battery are very sensitive to charging characteristics and may explode if mishandled.
- Make sure user has enough knowledge on Li-ion rechargeable batteries in Charging, discharging and assembly before use.
- We are not responsible for any damage caused by misuse or mishandling of these Li-ion batteries.
- Strongly suggest that you use our smart Li-ion battery charger to recharge The battery pack.
- Never use conventional DC adapter to charge the battery module.
Thanks to its higher voltage per cell and higher energy density, rechargeable lithium ion batteries are becoming popular for 12v li ion battery packs for applications where dimension, weight and run-time are important. Coremax develops a wide range of Li-ion battery packs of various voltage and capacity. These packs are made with best matching cells, sophisticated PCB electronics control for chagring and discharging optimization, and thus provide consistent life time performance. We have customized Li-ion battery packs for a wide range of application in medical,transportation, tracking and security, and other special and industrial applications. Our rich experience and knowledge with the cells, PCB and pack assembly differentiate our products.We can make any battery pack based on customer design, from 3.7V to 48V, from 60mAh to 1Ah.
What would cause a battery or battery pack not to take a charge?
- Zero voltage battery or zero voltage battery in the battery pack;
Lithium ion battery like polymer or 18650 li ion. They are very sensitive on low voltage. Normally, the battery or battery pack come with BMS, it has the function prevent over discharge. However, the bms circuit could be damaged for some reason. And battery cell fully discharged to 0. In this situation. The battery cell could be damaged permanently.
- Battery pack connection error, internal electronic components, protection circuit abnormal;
- Charging equipment failure, no output current;
- External factors cause charging efficiency to be too low (e.g. very low or very high temperature).
What to do when the battery pack does not charge
Step 1. Check the connections.
It may seem improbable, but the stability of any power connection is limited by its weakest link. Check the contacts and terminals for dirt, oils, corrosion, excessive wear or anything that can hamper a good, stable connection. This includes the battery contacts with application, in the charger, and on the battery itself.
Step 2. Reseat the battery in the devices.
It seems unlikely, but it happens. Some application require a tight fit with the battery and may seem attached when they are not fully locked in place. Make sure the battery is seated properly and the battery pack locks firmly in place when attaching it.
Step 3. Verify you are using the correct battery charger.
Using the wrong charger can not only prevent your battery from charging properly, it could damage your equipment. It can also be potentially dangerous.
Step 4. Check to be sure the charger is plugged in and turned on.
Sound silly, doesn’t it? Well, it isn’t really, because it does happen. It’s one of the easiest mistakes to make when charging a fleet of batteries and one of the simplest to resolve.
Step 5. Reseat the battery in the charger.
Battery seems like it’s connected to the charger when it’s not making contact at all. If it is a drop-in or desktop charger with a pocket or tray, the radio and/or battery may be able to sit in the tray without actually touching the contacts. If it is a plug-in type of charger, the plug may not be fully inserted. Be sure the radio/battery is properly seated or fully connected and the charging indicator light is on.
Step 6. Charge another battery of the same make and model in the charger.
Determine if the issue is really with the battery pack.
Step 7. Swap out the charger.
Sometimes a dead battery is the result of a dead charger.
Step 8. Charge the battery again.
Just to be sure, give it another chance.
Every battery has a limited life span determined by a number of different factors, including but not limited to how and where it is used, how much it is used and under what conditions. There is no set time table before a battery “kicks the bucket”. If your battery has reached its End of Life, it’s time to purchase a new one.
What are the main factors affecting battery life? 3 things you must know.
There are different reason affecting battery cycle life. Here we peak up some Main reasons to explain. So you can have a better understanding and how to take care of your batteries.
Charge the battery:
When selecting a charger, it is best to use a charger with the correct termination charging device (e.g. anti-overcharge, negative voltage differential (-dV) cut-off charging and anti-overheating sensing) to prevent the battery shorten circle-life due to overcharge. In general, slow charging extends battery life more than faster charging. So, we suggest charging a battery with small current go gain longer life cycles.
The depth of discharge is the main factor affecting battery life cycles, and the higher the depth of discharge, the shorter the battery life. In other words, reducing the depth of discharge can significantly extend the battery life. Because
For this reason, we should avoid over-setting the battery to very low voltages.
- When the battery is discharged at high temperatures, it shortens the life of the battery.
- If the design of electronic equipment can not completely stop all current, if the equipment is put on hold for a long time, without removing the battery, its residual current will sometimes cause the battery to be excessively consumed, resulting in excessive discharge of the battery.
- When a battery with different electrical capacity, chemical structure or different charging levels is mixed, and a battery of different ages and sizes, the battery will also discharge too much, and may even cause anti-polar charging.
If the battery is stored at high temperatures for a long time, it will attenuate its electrode activity and shorten its service life.
Make a 12 volt rechargeable lithium battery pack
Rechargeable lithium batteries produce 3.7 or 3.2 volts, depending on the type of battery and the chemicals it uses. To make batteries with higher voltages, manufacturers link identical batteries in a series circuit. In this way the voltages of the individual batteries are added together, so three 3.7-volt battery cells become one 12-volt battery (3.7x 3 = 11.1 volt). You can use the same electrical technique to create your own battery packs at home. Doing so requires basic math and no electronic skills.
Select the type of batteries from which to create a 12 volt rechargeable lithium battery pack. You might consider their size, shape or amp/hour capacity to be important, or you may just choose the batteries readily available where you live. It is important to use identical batteries in your pack. They must all have the same voltage and current characteristics.
Calculate how many batteries you need by dividing 12 by the voltage of the batteries.
Link together the batteries, connecting the positive terminal of the first battery to the negative terminal of the second. Link all the batteries in the same way, always joining opposite polarity terminals. You can stack cylindrical batteries, such as the A, C and D series batteries, on top of each other in a plastic or cardboard tube, or wrap them together in sticking tape. When using larger batteries with spring terminals, such as rectangular 6-volt batteries, join them with short lengths of wire.
Run a wire from the unused terminals at each end of the line of batteries. The voltage between the two wires is 12 volts.
If you want DIY for fan, Welcome to discuss and get help from Coremax Technical team. If you are looking for a professional 12 volt rechargeable lithium battery pack, please send business inquiry to Coremax. We are glad to offer all in one solution for you.
First check what kind of lithium battery you have. There are major 2 type of lithium battery in the market. 3.7v cell and 3.2v cell. And find out the full charge voltage. If the cell is 3.7v. Nomally full charge voltage is 12.6v( 3S lithium ion battery. when fully charged, each cell 4.2 volt). While if it is 3.2v cell. When it fully charged, the voltage is 3.65 volt. 12 volt lithium battery pack fully charged is 14.6 volt.( 4S 3.2 v cell). Make sure your charger voltage is compatable with the 12v lithium battery.
Please note that not all Li-ion batteries charge to the voltage threshold of 4.20V/cell. Lithium iron phosphate typically charges to the cut-off voltage of 3.65V/cell and lithium-titanate to 2.85V/cell. Some Energy Cells may accept 4.30V/cell and higher. It is important to observe these voltage limits.
Important to Lithium battery chargers
Lithium cells (18650, lipos, LiFePo4 etc.) which require the charging cycle CC-CV (constant current, constant voltage). The battery system may work for other types for batteries as well, as long as they wants to be charged with CCCV.
CC-CV varies the voltage to constantly deliver the current set by you. When the voltage reaches the battery’s maximum charge voltage, the current is gradually decreased so that the voltage does not exceed the set value.
3.2v LiFePo4 cells
3.7v Lithium ion cells
Lithium battery Charger guide List
|Nominal Voltage||Battery type||series||Charging voltage|
|12v||3.7v lithium ion||3||12.6v|
|24v||3.7v lithium ion||7||29.4v|
|36v||3.7v lithium ion||10||42v|
|3.7v lithium ion||11||46.2v|
|48v||3.7v lithium ion||13||54.6v|
|3.7v lithium ion||14||58.8v|
|60v||3.7v lithium ion||17||71.4v|
|72v||3.7v lithium ion||20||84v|
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