What is a good IR for LiPo?

INTERNAL RESISTANCE This one is verifiable and one of the best ways to monitor your RC LiPo batteries condition. Most decent higher capacity and higher discharge rated LiPo cells will have roughly 2 to 6 milliohms (0.002 to 0.006 ohms) of internal resistance when brand new.

What is the C rating on LiPo?

A C rating is a value given to the LiPo battery pack that refers to the maximum discharge rate of the LiPo. Examples of C ratings could be anything between 30C to 65C. Numbers outside of this range are possible as well. LiPo’s typically have the C rating marked right on the front of the LiPo pack.

How is LiPo charge calculated?

Calculate a 1C charge rate We need to divide LiPo pack capacity (in mAh) by 1000 to convert from mA to A. This yields 5000mAh/1000 = 5Ah. Hence a 1C charge rate for a 5000mAh battery is 5A. A 2C charge rate would be double this or 10A.

What rate should I discharge LiPo?

You don’t want to ever fully discharge a lipo (unlike a nimh), but it is recommended to discharge to ~ 3.7 to 3.9 Volts per cell for storage if they are fully charged and not ran. Or as mentioned charge them up to that level if you’ve ran them lower. Roughly 50% of capacity.

When should I retire LiPo?

For typical 1300mAh to 1500mAh packs (regardless how many cells), I would consider under 10mΩ to be great condition, 10mΩ to 15mΩ to be fine, 15mΩ to 20mΩ to be old, and over 20mΩ to be “time to retire”.

How many years do LiPo batteries last?

But LiPo batteries are sensitive and while they can last more than four years sitting on a shelf, temper your expectations. and at a voltage of around 50% of full charge (3.6 to 3.7v),” said tech entrepreneur Phil Strazzulla.

Is a higher C rating better?

The short answer is that when it comes to flight times and motor performance, the higher a battery’s C rating, the more likely it will make you smile. A battery that has a higher C rating delivers more energy, and that means higher performance.

What is a 5C charge rate?

Charge rates are just what they sound like. It is the amp rate at which you are capable of charging a specific battery pack. So for a 5000mAh battery, 1C would be 1(5) or a 5 amp rate, 2C would be 2(5) or a 10 amp rate, and 5C would be a 25 amp rate.

What is a 2 C charge rate?

The C Rate charge or discharge time changes in relation to the rating. 1C is equal to 60 minutes, 0.5C to 120 minutes and a 2C rating is equal to 30 minutes. The formula is simple.

How many amps is a 6S LiPo?

For a 6S LiPo (22.2V), the same 100-watt charger will deliver 4.5 amps.

What voltage should I discharge my 2s LiPo?

Nominal voltage is what manufacturers use when describing the voltage of their batteries. Discharged – the voltage of a discharged LiPo cell is 3.00V, and discharging below this will definitely damage the cell.

What’s the difference between Lipo 20c and 30c?

For example, a 20C 2100 mah lipo can discharge at 42 amps (cell count does not matter), and a 30c 2100 mah can discharge at 63 amps. A higher C rated pack also should be capable of holding its voltage a lot better, so a motor could actually begin to draw more amps because the voltage is higher.

Which is better Yeah racing 20c or yeah racing 25C lipos?

There’s a noticable difference between my Reedy 5000 mAh 20C LiPo’s and my better-performing Yeah Racing 5000 mAh 25C LiPos (and the YR’s were like $30 less). Given batteries of the same capacity, go with the higer C rating. Hopefully the manufacturer isn’t overstating the battery spec’s.

What’s the Max current of a LiPo battery?

LiPo batteries are rated with a continuous and max discharge rating. For example a 1500mAh LiPo may be rated at 10C continuous current should not be discharged at more than 1500mAh (1500mA * 10C * .001 = 15A) of current. Many Lipo Packs also have a “Burst” rating. For a brief period of time you can draw more current from many LiPo packs.

Why do LiPo batteries have a higher C rating?

Also to add – A higher C rating means a heavier battery and sometime increased dimensions for the same mAh. One positive benefit is that usually, a higher C rating means the lower the internal resistance of the pack. A lower resistance in the pack means you get more voltage delivered to your motor and less heat is generated.