100 amp hours is a fairly typical battery size when it comes to the camping, travel and RV industries. If you haven't got a 100 amp hour battery, you'll have something close, or a multiple of it. 200 amp hour and 300 amp hour battery sizes are extremely common.
So for most weekenders a 100-120AH battery is more than enough to power your fridge and LED lights for a night or two. For more serious campers it becomes a lot more critical to make sure that you have enough battery storage so you are not left stranded in the middle of nowhere with no power to run your appliances.
The Bottom Line
That's about 4¼ days. Based on my results, a 12V 100Ah LiFePO4 battery will run a 12V RV fridge for 3-4 days. Because lead acid batteries have 50% usable capacity, a 12V 100Ah lead acid battery will run a 12V RV fridge for 1-2 days.
You can imagine that one of the most frequent questions regarding the 100 amp hours batteries is this one: “How long will a 100Ah battery last?” A 100Ah battery can last anywhere from 120 hours (running a 10W appliance) to 36 minutes (running a 2,000W appliance).
If your home has a 200W watts television, 2 LED bulbs of 50W, and a few other appliances that amount to about 600W of home appliances, then a 18v 100ah lithium battery should be able to power these home appliances for approximately 2 hours.
The charge time depends on the battery capacity, and it takes around 2.5 hours for a 200-watt solar panel to charge 100Ah of battery capacity.
A: As far as capacity goes it's the same. However, 2 100 ah batteries would be better than 1 200 ah battery. This is because if anything ever happens to the 1 200 ah hour battery your screwed until you get another… see more. However, 2 100 ah batteries would be better than 1 200 ah battery.
Charging your battery at 12 volts and 20 amps will take five hours to charge a 100 amp hour battery. By multiplying 20 amps by 12 volts, 240 watts is how big of a panel you would need, so we'd recommend using a 300w solar panel or 3 100 watt solar panels.
However, how long your battery runs your TV will depend on a number of factors, such as your TV's power consumption and your inverter's efficiency. Based on my test, I'd say that, on average, a TV will run for around 15-20 hours straight on a 12V 100Ah lithium battery.
So, if You have a brand new, fully charged 12V 100Ah lead-acid deep cycle battery and You want to power a 1000 Watt inverter with an energy efficiency of 85%, You can expect a runtime of ~30-35 minutes.
In conclusion, if the battery is rated at 12V 200 Ah, the lithium ion solar battery can power the refrigerator for 10 hours and lead-acid battery for 9.6 hours.
The great thing about 12v fridges though is that they do not have to be running all the time and tend to hold their temperature better than an esky.
Not letting it die completely will extend the battery lifespan. If you are preparing to store your batteries for a period of time, make sure you do so at half charge. Unlike other types of batteries that need to be recharged throughout their storage time, lithium batteries do better at 40%-50% DOD (depth of discharge).
Therefore, we strongly recommend you use a Lithium battery charger. If this recommendation is neglected then it is best to choose AGM, Gel, sealed battery charge profiles to charge a Lithium battery.
How Many Batteries Are Needed for a 2000W Inverter? Two thousand watts will be the maximum output from your inverter. However, the way that this corresponds to battery capacity can be very complex. Your 2000-watt inverter can run through a 200 amp-hour battery in an hour when running at full power.
You need around 310 watts of solar panels to charge a 12V 100Ah lithium battery from 100% depth of discharge in 5 peak sun hours with an MPPT charge controller. You need around 380 watts of solar panels to charge a 12V 100Ah lithium battery from 100% depth of discharge in 5 peak sun hours with a PWM charge controller.
On the other hand, the Enerdrive B-TEC 200Ah & 300Ah battery has the ability to deliver a maximum discharge of 200A (up to a 2000W inverter). So, with this information at hand, a common 100Ah-150Ah lithium battery of this type can deliver enough energy to operate a maximum of a 1000w inverter.
Can Solar Panels Charge Lithium Batteries? Yes. However, lithium batteries could be damaged by regular charging because of their charge response, among other things. Most kinds of solar batteries are charged in three stages, which are bulk, acceptance, and float.
For example, a 100Ah lithium battery will power a 1000W inverter which is perfect for running laptops, televisions, blenders, power tools, and phone or camera chargers. A 1000W inverter is often the ideal size for most simple setups.
The 200Ah lithium battery is the most popular size for caravans and 4WDs.
100Ah of lithium is rated at 12.8V and therefore 1280Wh compared to 100Ah of AGM which is rated at 12V and therefore 1200Wh. It makes more sense to speak in Wh or kWh than Ah, but Ah at 12/12.8V is the predominant term in the automotive industry.
A new 200ah deep cycle battery connected to a 12v inverter, will last 10 hours if discharged with a load of 150 watts at 80% efficiency and depth discharge. If your load is 300 watts, however, the battery will only last for about half that time.
Quick Re-charge
With a 30 Amp charger, a 100Ah Lithium battery can be fully charged from flat to full in just over 3 hours vs. 10+ for a 100Ah AGM battery. This is a huge advantage with solar in that every amp that your solar panels produce are going directly into the battery.