What is battery discharge safety?
Batteries discharge when sitting on the shelf or when unused. The rate at which the battery discharges itself over time is called internal discharge rate. Safety – Because batteries store power, they are basically very tiny explosives. To prevent harm, batteries are designed to be as safe as possible.
How do I protect my lithium ion battery?
Boosting Battery Life
- Use partial-discharge cycles.
- Avoid charging to 100% capacity.
- Select the correct charge termination method.
- Limit the battery temperature.
- Avoid high charge and discharge currents.
- Avoid very deep discharges (below 2 V or 2.5 V)
How does battery protection work?
Protection circuit board overcharge protection control principle: When the battery is normally charged by the charger, as the charging time increases, the cell voltage will become higher and higher. That is, the charging circuit of the battery cell is cut off, and the battery cell will stop charging.
Why would you discharge a battery?
Discharging is the opposite of charging. When you charge some electric component, such as a battery, you are storing potential electric energy in it. When you discharge that battery, you are reversing the charging process and using the potential electric energy to drive other electric components.
What is 50 discharge of a 12v battery?
A Specific Gravity of about 1.200 or a voltage of 12.25 to 12.3 means the battery is about 50% discharged. By the time it’s down to 11.8 or 12 volts, it’s almost dead.
Is it safe to use unprotected 18650 batteries?
Unprotected 18650 Batteries Unprotected batteries do not have this electronic circuit in the cell packaging. Because of this, they can have more capacity and current capability than a protected cell. However, there is always a danger of over heating, short circuiting, or over discharging.
How do lithium-ion battery protection ICs work?
Battery protection ICs typically use MOSFETs to switch lithium cells in and out of circuit. Lithium cells of the same age and part number can be paralleled and share one protection circuit. Figure 1 is a typical application schematic for a Texas Instruments BQ29700.
How to protect battery from over-discharging?
This degrades the recharge capability of the battery as well as its efficiency. Therefore, there should be a protection circuit which can monitor the level of charging of the battery by detecting the terminal voltage and protect the battery from over-discharging by cutting off the battery connection with the electronics device.
What are the advantages of a battery protection circuit?
A good battery protection circuit will also provide over-discharge protection. Lithium batteries should not be discharged too quickly. Lithium batteries have maximum discharge current ratings. A battery protection circuit will take the battery out of the circuit if the load current is too high.
What is the lockout voltage of the battery protection circuit?
For a 0.4% overall accurate system, the lockout voltage would be at 3.088V or at 3.112V, more than twelve times better accuracy and optimally achieving the highest capacity. Furthermore, the load is kept disconnected with only 4.5µA to the protection circuit. Thus, the protection circuit works by preventing deep discharge of the battery.