Some countries and regions do not guarantee a constant supply of electricity, you need to be prepared for when you are faced with a power outage battery can provide power for a short period of time, having a more independent source of power supply can ensure the safety of electricity in extreme weather.
Batteries for emergency use must have good battery capacity, depth of discharge and battery life.
(1) Battery capacity is to determine how long you can use the battery, you should estimate the amount of electricity you need to use the battery, you should also save when using the battery, if you still use the battery as a normal time, then any battery can not solve your needs, if intermittent power outages occur in your area you should record the longest time of power outages to calculate the battery needs in detail.
(2) Depth of discharge, there are many types of batteries as a backup home power you need to choose a higher depth of discharge of the battery, do not choose lead-acid batteries such as starter batteries, you should choose lithium batteries, lithium batteries have the highest energy density, can be the smallest and lightest to store the power, is the best choice as a backup battery.
(3) Battery lifespan, because of the irregularity of the power outage may be your backup battery to save a long time, with a longer life of the battery is the object you want to consider, so that in your next reuse still have a good power storage
(4) Efficiency, the storage and release of the battery will produce part of the loss, choose a high-efficiency battery means saving power.
(1) lead-acid batteries, lead-acid batteries are the earliest rechargeable batteries, the process is more mature, the battery structure is simple and easy to maintain, followed by the cheapest price, but the lead-acid batteries have a shorter lifespan of 2-3 years, and the energy density is also relatively low.
(2) lithium batteries, lithium batteries have the strongest ability to store power, discharge is also stable, long service life is the best battery at this stage, the price is also more expensive than other batteries, not according to the standard use of lithium batteries is also more dangerous.
The amount of battery capacity is limited at this point we need to prepare power sources, such as generators, solar panels, etc., for generators you need to prepare diesel fuel for the generator to prepare the source of energy, not only is it inconvenient to use it will be used with a loud sound may cause unnecessary trouble, solar panels instead is a good choice, you can choose to connect the battery to the solar panels not only to always keep the battery’s power but also to Continuously provide a zero-cost source of power at night to use the battery during the day to recharge greatly increased range.
Yes, the battery is a DC power source when discharged, in order to be able to adapt to the AC power of the appliance you need to prepare an inverter, when choosing an inverter to consider the power of the appliance, to develop the appliance you use when using the battery and check the power, the power of the inverter should be higher than the appliance more than 2 times, when you use the appliance that needs to be driven by the electric motor to provide a very high initial power in order to start the appliance.
Backup battery is connected to the home circuit when it is not in use or when the power is normal, if the home has a solar panel is connected to the solar panel, the solar panel is first to supply power to the home the remaining power is stored in the battery. Normal users without home solar panels have the battery start to supply power to the home circuit in case of power outage, in addition the battery can also provide power when the voltage of the home is low during the peak period of electricity consumption.
Purchase of home batteries mainly lithium batteries, buy batteries according to your use also need to connect the battery to the circuit also need to pay a certain amount of labor installation costs, here to lithium batteries as an example of lithium batteries in the price of $130/kwh, you need to according to their own home electricity to specific selection of battery capacity and quantity.
In some areas of the country on the construction of the power grid does not meet the needs of households, there will often be blackouts and low voltage, in order to alleviate the pressure of the government will introduce policies to encourage users to use standby batteries, solar batteries, etc. This will be a certain relief to the high cost of your battery.
If you are convenient to view the display of the home meter you can view the power you need to consume an hour or a day, for example, you need to consume 1kwh of power per hour to view the daily use of 8 hours, then a day you need to use 8kwh of power, the depth of discharge of the battery will not be 100%, lithium batteries discharge depth of 80% or so so prepare for a day of blackouts you need to prepare 8/0.8 = 10kwh of electricity, if 3 days will need 3 × 8/0.8 = 30kwh of battery capacity, of course, different families with different power consumption, prepare a backup battery pack can be in 5kwh-200kwh, and even up to 1MW!
Prepare a set of batteries do not need to spend too much, can provide a certain demand for emergency power, the use of backup batteries can not only be used as a power outage, a picnic or caravan trip can be used to make life more convenient, for the areas of electricity tensions which is necessary to buy batteries to ensure that the batteries have a rigorous quality control standards.
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