Custom made lithium ion battery packs
Why Choose a Custom Lithium-Ion Battery Pack?
Off-the-shelf battery packs rarely meet the exact requirements of modern electronic devices. That’s why custom lithium-ion battery solutions are in high demand. Here are a few key reasons:
- Size and Dimensions: Standard batteries often don’t fit perfectly into electric vehicles, portable electronics, or specialized devices. A custom battery ensures a seamless fit.
- Discharge Current Requirements: Different devices have different power demands. A custom rechargeable battery can be tailored to match the exact wattage and performance needs of your application.
- Custom Connectors and Cable Lengths: Whether you need XT60 connectors or other terminal types, a custom pack allows you to define cable length and connector type for perfect compatibility.
EGbatt specializes in fully customized lithium-ion, LiFePO4, and LiPo battery packs. We offer complete customization including:
- Voltage and capacity
- BMS (Battery Management System)
- Connector terminals
- Battery fuel gauges
- Communication protocols (CAN, RS232, RS485, BQ solutions)
- Outer casing options (metal, ABS, PVC, or shrink wrap)
We also provide compatible 18650 battery chargers to match your packs—making EGbatt your one-stop solution for all custom battery needs.
custom lithium battery packs
How to make lithium battery pack? Normally, We will request a basic battery technical from you. This will ensure we can give a best solution on custom lithium ion battery pack. So we know what BMS and cells are best suitable. Also There are many battery chemistries, and EGbatt battery engineer knows what fit best for your design.
48V lithium iron phosphate battery Pack
Custom lithium ion battery pack
How to Make a Custom 18650 Battery Pack with EGbatt
The 18650 lithium-ion cell is one of the most popular choices for custom battery packs due to its high energy density, reliability, and versatility. To create the ideal custom battery pack with EGbatt, we’ll need some key information from you:
- Application of the Battery Pack
Let us know what your product or device is. Understanding its application helps us recommend the most suitable battery design, features, and configuration. - Discharge and Charging Requirements
Please provide details on the required discharge current and your charging method. This information helps us determine the appropriate BMS (Battery Management System) or protection circuit board for your pack. - Battery Placement and Dimensions
Where will the battery be placed inside your device? Knowing the available space and required dimensions ensures we design a pack that fits perfectly without modification. - Additional Features
Any extra features you’d like—such as a fuel gauge, battery meter, or display—should be mentioned. This helps us integrate those components into the design from the start. - Preferred 18650 Cell Brand
If you have a preferred brand or specific model of 18650 cell you’d like us to use, let us know. We’re able to source high-quality cells from trusted manufacturers like LG, Samsung, Panasonic, and others.
Applications of custom 18650 battery pack :
Ultrasound devices, Drug delivery systems, Patient monitors, Imaging systems: popular brands like Spectrum Imaging;ACD Systems;Orbital Atk;ECRM;Sirona;Nexus Publications, medical/hospital cart, Ventilators, Defibrillators: Advanced Life Support (ALS), Automated External Defibrillators (AED), Implantable Cardioverter Defibrillators and Implantable Cardioverter Defibrillators (ICDs), Surgical tools: includes ENT Instruments Haemostatic Forceps Diagnostic Instruments Home Surgical Kit Anesthesia, Motorized wheelchairs, Medical UPS Systems. Electric bike battery.
Why Choose Cylindrical Cells Like 18650 or 26650 for Your Custom Battery Pack?
If space and dimensions are not a limitation in your design, cylindrical lithium-ion cells such as 18650 or 26650 are an excellent choice for custom battery packs.
These standard cell formats are widely available and come in a range of capacities—making them suitable for both small and large battery pack configurations. Their high availability in the global market means faster sourcing, easier prototyping, and quicker transition to mass production.
By choosing commonly stocked cylindrical cells, you can reduce lead times and ensure a stable supply chain for your product.
Lithium Polymer battery in Parallel and in seires.
Voltage – The pack’s rated voltage is determined by the number of lipo cells placed in series. Instead of indicating the voltage, packs will sometimes indicate the number of cells in series (indicated by #S, where # is the number of cells in series). To determine the voltage of these battery pack, you multiple the number of cells in series by the cell voltage (3.7v).
1S = 3.7V
2S = 7.4V
3S = 11.1V
4S = 14.8V
Capacity – The battery capacity is based on two things. The first is the capacity of a single cell, and second, how many blocks are placed in parallel (indicated on some packs as #P, where # is the # of parallel blocks). The reason we refer to these in blocks is because in order to double the capacity of a pack, the total number of cells cells must be double. On a 1S pack (single cell in series), a cell placed in parallel will the double the capacity. However, to double the capacity of a 2S pack, a 2S block must be placed in parallel with the existing block (Figure 3). Some examples:
1s2p = 2 cell (single cell voltage, twice the capacity)
2s1p = 2 cell (twice the voltage, single cell capacity)
2s3p = 6 cell (twice the voltage, three times the capacity)
Lithium Polymer Battery Cell like LP103450 LP803860
For example: Our model 103450 like above picture, it’s 10mm(Thickness)*34mm(Width)*50mm(Height), and you can calculate the capacity with its Volume times Ratio（0.09-0.13） like above 10*34*50*0.115=1955mAh. So, we can offer 2 different model. 1 with 2000mah, another with 1800mah.
Remember the Ratio is changing regarding the volume but generally, you can treat it 0.11-0.12
Applications of custom Lithium polymer batteries :
- Portable Equipment:
Post machine, handset, portable printer, data terminal; - Medical Instruments:
Ecg monitoring instrument, ultrasonic, breath machine, electrocardiograph - Industrial instrument and communication instrument:
Flaw detector, fusion splicer, optical power meter, gas detector - Consumer Electronics:
PC, POS machine, electric tool, laptop. Ebike, emergency light power, data camera - Portable Equipment:
Portable printer, handset. Electric toy: RC car/ boat/helicopter etc.
LifePo4 custom made battery packs
Why USE A LiFePo4 as custom lithium battery packs
- LiFePO4 batteries include advanced protection-circuit-modules (PCM) that confer overcharge, over-discharge and short circuit protection ,etc.
- High energy density: Triple of lead-acid battery and twice of nickel battery.
- Wide range of operating temperature: charging temperature 0℃~45℃; discharging temperature -20℃~65℃.
- Good charging retention: batteries can be stored for long period with high residual capacity, because of low self-discharge.
- High rate discharging: the battery can keep discharging under 10C rate and its instant pulse discharge is over 20C.
- Good security: more safe than common lithium ion battery and lithium polymer battery.
- No memory effect: there is no need to discharge the battery before charging.
- Long cycle life: more than 3000 cycles.
- Environmental friendly: No cadmium, lead or mercury are added.
- Low cost: Fe and phosphoric acid are common components in the earth.
Applications of custom Lithium polymer batteries :
Custom lithium battery packs LiFePO4 battery with highest grade of safety, high energy density, long cycle life, and low cost, so that lithium iron phosphate battery (LiFePO4 battery) is regarded as the best choices for new age power sources. Coremax custom made lithium LiFePo4 battery packs a complete line of 12V 24V 36V 48V 60v 72V. The LiFePO4 batteries for use in solar energy storage, robotic, medical, instrument, Lithium marine industry, Lithium forklift battery pack and much more.
Working Current and Peak Current
Working Current/ Constant Discharge Current means the current the device draws in general, if you don’t have an engineer to know about it, let us know the watt of the device.
Peak Current also called pulse current or Max current which is mostly used to describe current that may happen in seconds when device just start and may have a high drain current requirement(normally seen when there is motor inside)
Expected Working hours of the Battery
It’s really important that you let us know the capacity of the battery you want to make. Battery capacity is measured in mAh or Ah.
Working hours are very important as that will decide the battery pricing, as well as battery size.
Dimensions or Size Requirement
Just make sure the custom lithium ion battery packs will fit in your devices or applications. In some cases that you might have already wanted the battery to be in-house, let us know what room is left for the battery
Find out which case is suitable for your custom battery design
Available 3 types casing for custom made battery packs: PVC, Plastic casing, metal casing
Which Connector Should I use?
Popular types like JST, JSH.Molex, Anderson, The cable and connector is very important also. Different AWG and different connector will sustain different current. If the cable and connector is not suitable, could be a big problem also.
How to make a battery pack ?
Lithium-ion batteries with the highest energy density—lightweight, long-lasting, and ideal for advanced battery solutions.
At EGbatt, we specialize in designing and manufacturing custom lithium-ion battery packs tailored to your specific needs. Whether it’s lithium-ion or lithium-polymer, we offer a wide range of chemistries and configurations to meet your performance, size, and application requirements.
Backed by years of industry expertise, EGbatt delivers battery solutions with superior reliability and performance. Our team is committed to helping you achieve optimal energy solutions through fully customized battery designs.
We use only premium-grade cells and components in every pack we build. All EGbatt batteries adhere to strict safety standards and meet our rigorous quality assurance benchmarks.
Explore our custom lithium-ion battery manufacturing capabilities, request a quote, or contact us directly to discuss your project. Let EGbatt power your innovation.