There is an increasing demand for reliable, rechargeable LTO batteries that not only last, but can also be used on circuit boards in constrained spaces. At Nichicon, we manufacture board-mount, pin-type batteries that can be mounted to small circuit boards for space constrained applications. These batteries can provide a constant supply of power as they can be charged at constant current.
What is a board-mount battery?
Our board-mount batteries are lithium-titanium-oxide (LTO) batteries that can be mounted to printed circuit boards (PCBs) for a number of applications. These batteries are small and slender, which is why they are also referred to as pin-type batteries. Our pin-type batteries are rapid charging for repeated usage.
Nichicon provides board-mount batteries that are also LTO batteries which differ from standard lithium-ion batteries. The main difference is that LTO batteries use lithium titanate instead of graphite as the anode active material. The lithium titanate causes the electrode surface and ions in the electrolyte to form the energy storage mechanism. Standard lithium-ion batteries use an electrochemical storage mechanism involving electrochemical reactions with electrolytes made from lithium salts. When in use, the lithium ions migrate and become stacked within the anode. When the electrochemical reaction occurs, the discharged ions pass through the solid electrolyte interphase (SEI) coating on the surface of the anode and stack on top of the coating. The passage of the lithium ions through the SEI coating generates significant resistance that will increase as more lithium ions are stacked on the SEI.
The titanate in LTO batteries has a higher reaction onset voltage than graphite and other materials used in traditional lithium-ion batteries which results in a thinner SEI coating for lower resistance and reduces electrolyte decomposition. This results in a better cycle life performance than standard lithium-ion batteries.
What are the advantages of Nichicon board-mount batteries?
Our LTO board-mount batteries have many advantages over traditional lithium-ion batteries including superior performance, rapid charging, and a longer life. They can be mounted onto PCBs for a range of space constrained applications.
The following are the main advantages of our board-mount batteries:
- Rapid charging: Our board-mount batteries can discharge and recharge much faster than standard lithium-ion batteries. A traditional lithium-ion battery may take about an hour to charge while our LTO batteries can charge in about 3 minutes at the same current value. Our LTO batteries are ideal for applications that need a small, high-powered battery.
- Micro size: Our small, cylindrical LTO board-mount batteries are our smallest ever at 3 millimeters and they have a small footprint so they can be used for space constrained applications.
- Long life: Our high-cycle life battery can last for more than 25,000 charge/discharge cycles. They are resistant to over-charging and over-discharging. The use of lithium titanate in LTO batteries also results in a longer life as the lithium ions are less likely to be consumed by the electrolyte.
- Maintenance free: Our board-mount batteries require no maintenance.
- Sustainable: These batteries are designed to be environmentally Responsible and adhere to international standards such as RoHS regulations, meeting stringent standards for operation.
- High power density: The high-power density input/output of our LTO batteries is higher than typical lithium-ion batteries and approaches the capabilities of electric double layer capacitors (EDLCs).
- High safety: Our LTO batteries can operate in harsh conditions and temperatures with a very low risk of ignition or explosion.
- Low temperature: These low temperature batteries can be charged and discharged at temperatures as low as -30°C as the lithium titanate does not experience thermal runaway at these temperatures that can lead to oxygen combustion reactions like in standard lithium-ion batteries.
- High power discharge: Our high discharge batteries can fully discharge in about 3 minutes compared to about an hour for standard lithium-ion batteries.
- UL 1642 & IEC 62133-2 certified
- ISO 9001 & ISO 14001 certified
What are the application areas of Nichicon board-mount batteries?
LTO battery applications include but are not limited to:
- IIoT / IoT applications
- Energy harvesting applications using intermittent ambient energy sources
- Wireless sensors
- Asset tracking applications
- Space constrained applications
If you are looking for a small, long lasting rechargeable LTO battery for PCBs for constrained space applications, our board-mount batteries are ideal. Our pin-type LTO batteries are small and slender to easily fit on PCBs in tight spaces.
Call Nichicon or a distributor or sales rep in your area for more information about our LTO board-mount batteries.
FREQUENTLY ASKED QUESTIONs
The lithium titanate battery (LTO) shares many characteristics with the lithium-ion battery. One difference is the LTO anode. An LTO battery uses lithium titanate oxide, while a lithium-ion battery uses carbon. By using lithium titanate, the battery has a significant performance improvement.
The SLB is a battery with long leads, just like a standard capacitor. The leaded profile allows for soldering directly to the circuit board using hand soldering or a select solder technique. Lithium Titanate batteries require an additional mounting bracket or holder placed on a circuit board. The Nichicon SLB (LTO) take less board space allowing them to be used in very compact or densely populated circuit boards.
LTO batteries are safer; they have an extremely small risk of ignition if there is a short. The SLB, Nichicon’s LTO battery, has superior charge and discharge capabilities, such as a 20C charge rate. Even higher rates are possible with pulsed discharges, like those used in telecommunications.
‘The SLB can withstand up to 25,000 charge/discharge cycles and have a lower cold temperature rating than a lithium-ion battery. And its low internal resistance allows energy harvesters to charge with weak currents without loss. They will not ignite if a short occurs. In addition to the advantages previously mentioned, the SLB comes in aluminum electrolytic case styles and size.
LTO batteries have a higher capacity and can be discharged over longer periods of time than electric double-layer capacitors with less leakage. LTO rechargeable batteries have 20-30 times more energy than an EDLC of the same size and can replace EDLCs to provide longer periods of power.
The main difference between LTO batteries and standard lithium-ion batteries is that lithium-ion batteries used some form of carbon, usually graphite, as the anode active material while LTO batteries use lithium titanate as the anode active material. LTO batteries charge and discharge faster, last longer, are safer, and have a higher power density than standard lithium-ion batteries.