Here we are testing the Turnigy Graphene 6S 4000mAh 45C battery pack to see if it meets its claims. This performance review covers internal resistance, C rating, and performance under a 105-amp load. We’ll also compare it to previous 4S Graphene and Liperior packs to put results in context.
What Makes It Unique
The Turnigy Graphene pack comes in a black-and-blue hard case, providing durability for high-demand applications. At 4000mAh with a 45C rating, it’s marketed for continuous 180-amp output, which we’ll test against reality. Graphene cells are designed to handle high current while maintaining lower internal resistance than standard LiPos.
Internal Resistance & True C Rating
We measured internal resistance using a 1.5C charge at 6A. The first pack showed IR values ranging 2.3–3.4 mΩ, and the second ranged 2.1–3.5 mΩ. Using the average resistance, I calculated the true C rating at 24C, which translates to a maximum continuous current of 96 amps.
Even though the pack claims 180A continuous, real-world tests show it cannot safely reach that without overheating. The internal resistance and calculated C rating indicate this pack is best suited for moderate high-demand use rather than extreme high-current setups.
Load Performance
On a 105-amp load test, the pack averaged 103–104A before thermal limits stopped the test. Voltage held well at the 10-second mark (3.65V), outperforming a previous 4S Graphene (3.52V) and a Li-Perior 4S (3.58V).
Total milliamp-hours delivered to the 3.5V cutoff were 2462mAh for the 6S pack, showing improved energy extraction over older 4S packs. Energy per cell and average cell wattage were highest for the 6S Graphene, confirming its ability to sustain performance under significant load.
Practical Applications
This pack is ideal for RC setups pulling around 100A, including EDF aircraft or high-speed 6S vehicles. While it won’t achieve the manufacturer’s 180A claim, it provides reliable performance without overheating when used within its real C rating. Avoid continuous extreme-current draws to maintain longevity.
Final Thoughts
The Turnigy Graphene 6S 4000mAh 45C pack performs decently under realistic loads. It exceeds older 4S packs in voltage retention and energy per cell, but falls short of its advertised 45C continuous rating. For RC hobbyists seeking reliability in 100A applications, this pack delivers—but it’s not a monster.
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