The Tattu 2S 2500mAh LiPo battery is designed to be used on Fatshark FPV goggles. In this review we will get one and test its performance. I have been using a small 2S 1300mah Lipo battery to power my Fatshark Dominator FPV Goggles. Every charge gives me about 2 and a half hours of power which is enough for a day of flying and I am happy with it. But the performance has gone down significantly over the years so I decided to look for a battery replacement. The Tattu 2500mah 2S seems to be a good option. You can buy the Tattu 2S 2500mah LiPo from: Gens ace & Tattu. Close Look at the Tattu 2S 2500mah The Tattu 2S 2500mah battery has a DC3.5mm barrel connector as well as a 2S balance lead. This is compatible with all Fatshark FPV Goggles. The battery pack fits into the standard head strap perfectly. On top of the battery there is a push button, and an LED indicator for power level: red = low, yellow = medium, green = high. This can be a useful feature, for example, to quickly check whether you need to charge your battery before leaving the house with your quad. On the left in the photo below, it s the Turnigy 2S 1300mAh LiPo battery I have been using in my Goggles for many years. The Tattu 2S 2500mAh LiPo battery is slightly larger than the Turnigy but the Tattu has nearly double the capacity according to spec, and it weighs just 29 grams heavier (101g vs 72g). Performance Testing Let s check how long this Tattu 2500mah battery can power my goggles. I am using the Dominator V2 with Pro58 diversity module, with a fully charged battery, it took 4 hours and 50 minutes until the voltage drops to 3.5V per cell. That s pushing 5 hours, very impressive! :) Comparing to some other batteries I have tested on the same pair of goggles in the past: Original Fatshark 2S 1000mAh: 50 minutes Turnigy 2S 1300mAh: 2 hours and 38 minutes Hyperion HvLi 2S 1300mAh: 2 hours and 53 minutes This also confirms the capacity of the pack is correct. When checking the internal resistance of the battery, one cell is 6.1m while the other is 20.2m . However, I don t think the inconsistency in IR is going to cause any significant issues in the usage of the battery for low power applications, i.e. for our Goggles, so I wouldn t worry about it. Charging Goggle Batteries I don t know how everyone charges their goggles batteries, but for me I charge them like a normal 2S battery by using this simple DIY adapter. You can make your own using these two parts: Female 5.5mm barrel screw terminalnbsp; Male JST connector Source: https://oscarliang.com/tattu-2s-2500mah-lipo-battery/
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