A new generation of Lithium power stations will transform home and outdoor energy use over the next few years. When you choose a battery, the product description is full of confusing data – so how do you make your choice? Keep in mind that the number of recharges will depend on the battery capacity (expressed in ampere-hours, Ah) of the LiFePO4 battery, and the MacBook’s power consumption. A MacBook 13-inch typically has a battery capacity of around 50-60 watt-hours (Wh). This guide uses the Macbook as an example – the same would apply to any laptop with a similar power consumption and similar-sized battery.
LifePo4 Batteries are widely available and have the following advantages over other technologies –
Long Cycle Life: LiFePO4 batteries are known for their exceptional cycle life. They can typically withstand thousands of charge-discharge cycles, making them ideal for long-term off-grid use.
Deep Discharge Tolerance: LiFePO4 batteries can safely and consistently be discharged to around 80% or even lower without significantly affecting their lifespan. This means they can handle being drawn down to 5% effectively.
High Efficiency: LiFePO4 batteries have a high charge and discharge efficiency, which means you get more usable energy from them compared to some other battery chemistries.
Safety: LiFePO4 batteries are considered safer than some other lithium-ion batteries. They are less prone to thermal runaway and are less likely to catch fire, which is crucial for off-grid installations where maintenance might be less frequent.
Low Maintenance: These batteries require minimal maintenance compared to lead-acid batteries. They don’t need regular topping up with distilled water, for example.
Compact and Lightweight: LiFePO4 batteries tend to have a high energy density, allowing for a compact and lightweight design, which can be advantageous for off-grid setups.
Cost-Effective: While LiFePO4 batteries may have a higher upfront cost compared to some other battery types like lead-acid, their longer lifespan and reduced maintenance requirements often make them more cost-effective in the long run
Here are some recommended batteries with the approximate number of times each battery can recharge a 13-inch MacBook. Keep in mind that the number of recharges will depend on the battery capacity (expressed in ampere-hours, Ah) of the LiFePO4 battery and the MacBook’s power consumption. A MacBook 13-inch typically has a battery capacity of around 50-60 watt-hours (Wh).
Approximate Price: $1,000 – $1,200
Weight: Around 28-30 kg
Battery Capacity: Varies (check product specifications)
MacBook Recharges: Multiple recharges possible
Victron Energy LiFePO4 Battery:
Approximate Price: $1,200 – $1,400
Weight: Approximately 35 kg
Battery Capacity: Varies (check product specifications)
MacBook Recharges: Multiple recharges possible
Approximate Price: $900 – $1,100
Weight: Around 30 kg
Battery Capacity: 100Ah (1,200 Wh)
MacBook Recharges: Approximately 20 recharges
Renogy Smart LiFePO4 Battery: (UK)
Approximate Price: $800 – $1,000
Weight: Approximately 25 kg
Battery Capacity: Varies (check product specifications)
MacBook Recharges: Multiple recharges possible
Approximate Price: $900 – $1,100
Weight: About 15 kg
Battery Capacity: 105Ah (1,260 Wh)
MacBook Recharges: Approximately 21 recharges
Mighty Max Battery ML35-12 LiFePO4:
Approximate Price: $350 – $450
Weight: Around 11 kg
Battery Capacity: 35Ah (420 Wh)
MacBook Recharges: Approximately 7-8 recharges
Battle Born 100Ah 12V LiFePO4 Battery:
Approximate Price: $950 – $1,100
Weight: Approximately 29 kg
Battery Capacity: 100Ah (1,200 Wh)
MacBook Recharges: Approximately 20 recharges
When selecting a LiFePO4 battery for your MacBook recharging needs, consider both the capacity of the battery and its cost-effectiveness. A higher-capacity battery will provide more recharges, but it may come at a higher cost. Choose a battery that aligns with your specific power requirements and budget.
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