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Solar batteries/batterie lithium are most commonly deep cycle batteries. Renogy Canada Lithium, Gel, and AGM batteries offer class-leading performance for a wide variety of applications. Our quality deep cycle batteries cycle, so they can charge and discharge many times, perfect for regular use. Use deep cycle batteries as power storage in RVs, vans, boats, off-grid homes, or other solar setups.
1. Lithium Iron Phosphate Pros?
- Long life span (5-10 years) vs lead acid (1-3 years), depending on depth of discharge and assuming that the cycle limit doesn't kill the battery first
- Longer cycle life, as LiFePO4 batteries last 1,000 to 3,000 charge and discharge cycles, compared to similarly sized lead-acid batteries, which can range from 200 to 1000 cycles (again, assuming depth of discharge is within recommended limits for both battery types).
- LiFePO4 batteries are less susceptible to problems caused by depth of discharge...a LiFePO4 battery can be dropped to 20% of charge without long-term damage. Most lead-acid batteries lose capacity or cycle life if they're discharged more than 50%.
- Lighter than lead-acid batteries.
- Arguably, Canada LiFePO4 batteries are more environmentally friendly than lead acid.
- Very safe - the odds of a "thermal runaway" (aka battery fire) are very low. The same can not be said of other lithium-ion chemistries.
2. Lithium Iron Phosphate Cons?
As mentioned, LiFePO4 batteries are costly.
LiFePO4 batteries are hard to find. Most must be purchased online.
Susceptible to damage via overcharging (it's very important to use a charging system that's designed for LiFePO4 batteries if you want to maximize their life).
3. Can two or more systems be used to charge a battery?
Yes, but you need to pay attention to the controller without parallel function, there is a certain probability that the controller will detect the battery voltage inaccurately.
4. How long do deep cycle batteries last in solar power setups?
Deep cycle batteries are long-lasting in solar power setups. The general lifespan for a solar battery is between 5 and 15 years.
5. What size Lithium battery/batterie lithium do I need?
The Lithium battery should be based on intended usage. Sometimes this could be for daily appliances or for extended periods of energy storage, perhaps 2 or 3 days of backup power. Smaller systems typically utilize 12V systems and bigger systems such as 1200W or more utilize 24V battery banks. The main reason is efficiency. Unless the charge controller allows it, it is better to have just one controller on a battery bank and not multiple, for they can interfere with charging efficiently.
Let's say you have a 200W PV that you'd like to use for 10 hours per day. That's 2000 watt-hours or 2KWh of power need per day.
You take your needed power and multiply it by 2, since you want to preserve at least 50% of a deep cycle battery for long battery life. That means you actually need 4000Wh but should use 2000Wh without damaging your battery.
Since Volts x Amps = Watts, Volts x Amp-hours = Watt-hours, and Watt-hours/Volts = Amp-hours So divide your 4,000 Watt-hour need by a 12V battery, and you have 333.33 Amp-hours. You could get this in one big battery or multiple smaller 12V that adds up to your need.