There are different types of batteries used in digital cameras, but some are specific as peruse of the camera.
What are camera batteries?
Different types of batteries are used in cameras for quite some time now. And their uses have increased from just flash to full-scale powering in digital cameras. Each camera is designed to use a particular kind of battery, and the battery type should be specific to the camera design. Most used batteries these days in cameras are lithium-ion batteries, and few cameras still use AA or AAA battery. Cameras for professional and day-to-day use, such as the advanced digital cameras & DSLRs, use rechargeable lithium-ion batteries for a longer life span between two charges and the high-power requirement of the camera.
On the other hand, few digital cameras use smaller battery units with low power consumption and are typically powered by AA or AAA batteries. So these are the kind of ways batteries are placed in the cameras as the main power source to click a picture or record a video. Different types of batteries are made from different electrochemical compositions and are discussed further.
Different types of batteries for cameras
- Nickel- Metal Hydride Batteries
These are rechargeable batteries that are within the budget for most users. Some digital cameras use these batteries when it suits the performance and economics of a camera model. In certain circumstances where the lithium-ion battery and other different types of batteries cannot be used, NiMH rechargeable batteries are come in handy. These batteries can be designed in AA and AAA standard design types to give the additional advantages of cheap rechargeable batteries. Positive nickel hydroxide electrode and negative metal hydride electrode with potassium hydroxide electrolyte and wide operating temperature range give options for camera manufacturers to use NiMH as the battery in their cameras as integrated or replaceable ones.
Digital SLR cameras use lithium polymer batteries because of their high energy density, extended power supply, and lightweight. These hold 40% more power than equivalent Ni-MH batteries and other batteries. The high-power consumption of digital cameras uses lithium polymer batteries as the perfect fit. These batteries are compared to different types of batteries and provide a longer life span. Unlike old flash optical cameras with film, digital cameras use more energy in their operation by processing units, flash, display, and overall operation. Also, the lightweight of these batteries does not add to the already heavy and bulky digital cameras.
However, different types of batteries and their uses vary with the application and conditions these are used. Let us compare these two batteries in terms of their general specifications. Although different kinds of batteries and their uses are relevant to cameras, these two are most relevant for the purpose.
Ni-MH vs. Lithium polymer batteries for cameras
Among different types of batteries, these two batteries are pretty similar in some respects like internal resistance of 200-300 m ohm, the cycle life of around 300-500, and 2-4 hrs of fast charge time. They differ in the following aspects with their pros and cons.
- The energy density of a lithium polymer battery (100-130 Wh/kg) is higher than that of a Ni-MH battery (60-120 Wh/kg), giving it an advantage considerably higher life span.
- Self-discharge of lithium polymer battery is around 10% per month compared to 30% of Ni-MH battery.
- The nominal cell voltage of Ni-MH is 1.25V as compared to 3.6V of lithium polymer battery.
- The discharge temperature of the Ni-MH battery is -20oC to 60oC, and the Lithium-ion battery is 0oC to 60oC, giving Ni-MH batteries an upper edge for below zero temperature conditions.
- Maintenance is required in Ni-MH battery as compared to no such requirement in Lithium polymer battery.
- The cost of the Ni-MH battery is cheaper than the Lithium-ion battery.
What is your choice to go for Ni-MH battery or Lithium polymer battery? We at BPI have all different types of batteries? We do specifically design batteries as per the design and power requirements of the camera. You can check out our online catalog to choose the battery type for your device. If you need a replaceable and rechargeable battery pack for your digital camera, we have a wide variety of these to suit your needs.