What sets Freedom Won’s batteries apart from the rest?
SegenSolar has proudly stocked Freedom Won on its portal for some time now. This original equipment manufacturer (OEM) specialises in producing battery energy storage systems (BESS) to the highest possible standards, adhering to ISO 9001:2015 and ISO 14001:2015 for quality and environmental management systems, as well as ISO 45001:2018 for occupational health and safety.
Thanks to the brand’s all-round excellence, Freedom Won’s portfolio boasts some of today’s best technologies and top-of-the-range features and offer unbeatable performance without compromise.
So, what exactly makes Freedom Won batteries such a good option for installers — from their very construction to the casing they are stored in?
Lithium-ion phosphate cells
Freedom Won uses lithium-ion phosphate (LiFePO4) cells, which are proven to outperform most other chemistries in terms of safety and longevity. These cells provide enhanced temperature resilience to prevent overheating and spontaneous ignition in warm climates.
Not only do Freedom Won’s cells comply with the IEC 62619:2022 standard for rechargeable lithium-ion batteries, but its LiTE battery samples have also passed thorough drop testing. The products should be handled carefully, but they will not set on fire when dropped or pierced.
Battery management systems
LiTE batteries are equipped with a battery management system (BMS), which records the number of cycles the unit has delivered and controls various factors affecting the cells, such as voltages, currents and internal temperatures. They can also detect resistance of busbars and connectors.
If anything inside the battery exceeds safe limits, the BMS can automatically stop the charge, discharge or whole system altogether — preventing irreparable damage and keeping end-users safe. Plus, the BMS can control external system components like inverters for easy maintenance.
Copper nickel-plated busbars
The busbars Freedom Won uses in its LiTE batteries, which carry and distribute electricity, are designed to be bigger than the industry norm. In turn, these larger parts ensure minimal resistance, stop hotspots and prevent heat-build up when the product is running at high power.
What’s more, the copper busbars in Freedom Won batteries are highly efficient — more so than most other metal conductors. Plus, they gain extra durability from the nickel plating, which ensures that the conductor’s surface does not oxidise and keeps high-resistance connections at bay.
LiTE battery power cables are fixed to the cells with heavy-duty studs or laser welding in order to reduce the risk of a hot connection due to inadequate fastening and actively prevent the system from reaching unsafe temperatures.
There are also multiple locations inside Freedom Won’s high voltage batteries that have fuses in series within the cells. If the battery suffers any damage that causes an internal short-circuit, these fuses will blow to limit the risk of further damage and keep people out of danger.
Up and down cycling
Freedom Won batteries are built to manage two cycles at an 80% depth of discharge (DoD) per day. If a cycle has a DoD lower than 80%, a pro-rata calculation comes into effect. If a battery discharges from 100% to 20% state of charge (SoC) and back to 100%, that counts as a full warranty cycle.
In turn, these products can handle South Africa’s power outages, whereby load shedding might be implemented four times a day — and batteries need to complete a half cycle each time the national grid fails. If more cycles are required, the BMS will maintain safe temperatures.
LiTE batteries from Freedom Won feature circuit breakers, which prevent damage and fires from occurring and allow the BMS disconnect the battery should overload or high external short currents take place — especially useful if a connected device does not respond to CAN bus commands.
Whilst comparable batteries from other brands may use contactors and rely on internal fuses to do all this, these components can still become damaged during a short circuit current and Freedom Won’s batteries would still be usable. That is because the circuit breakers are resettable.
Robust exterior casing
With three-millimetre-thick casings that are made with durable aluminium, Freedom Won ensures its batteries cannot be easily moved by accident or damaged from the outside. So, the product’s internal workings are protected, making them more likely to last longer.
Freedom Won also coats these battery casings in a white powder coating, which is non-toxic and chemically inactive, meaning it meets the necessary environmental protection standards. Thus, the casings are safe, secure and strong enough to withstand the elements.