Power Supply

FPV, drone,RC car, RC helicopter or airplane etc parts, power battery.

[morepower2018-blog]

TOP3 FPV Quadcopter Battery

An FPV quadcopter's battery has a tough job. A racing drone or freestyle quadcopter demands a huge amount of power. The best batteries can deliver this power without damaging themselves in the process.

Batteries come in different voltages, indicated by their S-rating. 4S batteries are the standard for mini quads. Some beginners choose to start on 3S because the slight reduction in power makes it easier to learn. Personally, I think this is a waste, because most beginners quickly outgrow the 3S batteries. Spend an extra few hours practicing on a simulator instead of buying 3S batteries. That's why there are only 4S batteries on this list.

It's impossible to tell from marketing which batteries are the best. C-rating is supposed to indicate a battery's ability to deliver current, but there is no standard way of determining C-rating, so many manufacturers basically make it up. Capacity, measured in milliamp-hours (mAh) is like the size of a car's gas tank. But bigger batteries don't always mean longer flight times, because they're also heavier. And heavier batteries make the quad handle worse. The good news is, I've done a lot of real-world testing, so I know which of batteries are worth having. Here they are!

The best value: Ovonic 1300mAh 4S 100C lipo

Ovonic battery is a new brand, offer the best value RC hobby batteries. 1300mAh 4S lipo battery with amazing performance and reliablity. Compared to a similar mAh battery from another vendor, the Ovonic will be smaller and lighter. It's similar with Tattu brand, but Ovonic price is affordable. The best value brand. Only $15.69 on AMPOW.

Top of the line: Tattu R-Line 4S 1550 mAh 95C.

Tattu makes some of the best batteries for FPV drone racing and freestyle, period. Everybody puts "95C" discharge rating on their label. Tattu R-Line batteries come as close as anybody to actually achieving it.

These batteries cost more than twice as much as the budget batteries in this list. But if you fly the fastest and most powerful mini quads, then buying a lesser battery is literally throwing money away. Not just because the cheap battery will disappoint you, but because it will literally destroy itself trying (and failing) to deliver the massive power that the high-end quad demands. $28.99 now on genstattu. 

The higher performance: Ovonic 1550mAh 4S 100C battery

If you're flying an ultra-powerful quad, you should pick one of the higher quality batteries. If you're a starting pilot, looking for a solid battery at a value price, that I personally have put through the wringer, the Ovonic 4S 1550 mAh is the one you'll buy. The 1550 mAh 4S would be my personal choice for freestyle. Only $18.99 on ampow.

[morepower2018-blog]

Tattu 1800mah 4s 75C battery review

I was recently sent one of the new Tattu 1800mah 4S 75C batteries to do a bit of testing. I’ve been flying it for a week or so and I have spent some time gathering data. Here is what I’ve found so far.

To give a bit of background, I am a multirotor pilot, and am primarily interested in miniquads.That being said the testing I’ve done applies universally. These high C rated batteries are useful beyond the bounds of multirotors into the world of 3D flying, and high performance aircraft.

For this test I’ve done some stress testing (and unintentional abuse!) and general data collection with this battery, and for comparison purposes a Dinogy 1800mah 65C as well. I did a current draw test on both batteries at 25A to measure voltage drop. For now I have skipped the internal resistance test as my current tester seems to be giving unreliable results. I will post an update as soon as I get some reliable results. Finally I recorded a flight with an onboard current and voltage sensor in the OSD to demonstrate voltage drop in real world flight conditions.

Physical Characteristics

As with the GensAce 2200mah 3s I reviewed last week, my first impressions of this battery are very positive. GensAce/Tattu seem to use the same build techniques in both their lower discharge and higher discharge batteries. It has the same aluminum support that covers the battery and adds additional protection to the top and bottom of the battery. After a bit more research I have found that this actually provides compression during high discharge and according to research can significantly extend the life of the battery. Again, where the high current lines enter the battery casing they are re-enforced with additional heat shrink. The balance leads also come out the opposite side of the casing rather than the same side as the high current lines. In addition this battery has a plastic cover that extends over the balance lead cables, preventing stress on the cables when plugging and unplugging the balance cable. I will point out that on some chargers this can prevent the balance leads from fitting properly. Unlike the 2200mah, this battery came with XT60 connectors, which means no soldering for me. Battery dimensions actually exactly the same as the 2200mah 3S, and are accurate to the product description on the sellers website. The wight is just over 200g and the physical size is 105mm x 35mm x 25mm. Because of the aluminum plates the size is very consistent.

Load Testing

I wired the battery up to a 25A load to test voltage drop. At the top of the battery the voltage dropped mostly linearly at a rate of 0.037V per A. That leads to a projected drop of 1.9V at a 50A load.

The flight video shows a voltage drop of about 1.5V at 65A which is actually a good deal higher than the projected ratings. Granted this sag was at the top of the battery, and this was the batteries first flight, however it leads me to believe that the performance of these batteries increases as the amp draw increases. It appears to be a factor of the carbon nano-polymer used to increase the C rating.

Also it is worth noting that on this first flight test, I got a bit caught up in flying and pushed it a bit harder than I was planning. The battery came down screaming hot and a tad unbalanced at 0.10V maxium variance between cells. However after a few hours of cool down the battery was back to withing a 0.03V maximum variance. After a slow charge the battery was perfectly balanced. After several additional flights there seem to be no ill results from the abuse on the initial discharge. I am very impressed with the handling of the abuse!

Comparison Load Test

For comparison the Dinogy battery performed slightly worse with a 0.043V per A drop.

Conclusions

My initial impressions of these batteries both in build quality and performance are very positive. Because of the very high C rating, it is hard to get an accurate picture of whether or not this battery can fullfill a 75C (135A) current load, but given very few people have a setup that can draw that type of constant load, that’s not something we can easily gauge. Since I haven’t found a reliable method for testing internal resistance (other than the load tests above) It’s hard to get an objective measurement of true C rating. I will post an update as soon as I can test these on a more reliable tester. I can say up to 65A loads this battery performs excellently. I was also very impressed with how well it recovered from first time abuse.

The battery provides both solid performance and the extras in the build such as the reinforced cables and aluminum compression plates add up to a very nice battery. However that battery does come at a premium price compared to other similarly rated batteries. For those interested, the battery is available here, more Tattu batteries, check the link above.

[morepower2018-blog]

Ovonic 5000mAh 2S 50C battery review

This is the new OVONIC 7.4V 5000mAh 50C 2S LiPo battery pack from Ampow. The battery features a hard case design with a 12-gauge pre-wired Deans (T-style) connector and JST-XH balance charge connector. It is rated with a 50C discharge and 100C max burst discharge rate. The battery is a standard “stick pack” with dimensions of 137mm x 45mm x 24mm and weighs in at 302 grams.

This OVONIC pack is ideal 1/10-scale off-road vehicles which use a full-length battery pack (such as short course trucks, monster trucks, and rock crawlers).

This battery pack provided ample run-time in our Traxxas 2wd Slash with a modified motor, and remains well balanced and consistent charge after charge.

Specifications (provided by Ampow):

   Brand: Ovonic    Chemistry: Li-polymer    Cells Number: 2S    Voltage(V): 7.4V    Capacity(mAh): 5000mAh    Discharge: 50C    Max Burst Discharge Rate (C): 100C    Charge Plug: JST-XH    Discharge Plug: Deans Plug    Battery Weight(dev.20g): 302g    Battery Dimension: 137x45x24mm    Wire Gauge: AWG12#    Wire Length(mm): 115mm

Pros:

   Very reasonably priced at only $24.99.    Plug and play with pre-wired connectors.    Clear shrink-wrapped hard case design.    Fits most 1/10-scale short course trucks, monster trucks, and rock crawlers.

Cons:

   Balance plug has a bulky protection clip that can make placement in the car difficult without removing it.

Final Word:

While this is not our first pick for serious competition, this battery pack works great for someone who is looking to go backyard bashing, upgrade from a NiMh battery pack, and/or looking for a budget-friendly LiPo battery pack.

Source: https://www.liverc.com/

[morepower2018-blog]

Tattu 2-in-1 Power Bank Wall Charger Review

All of us have been there: you’re out doing errands or having fun and then all of a sudden you realize your phone is dead. Now, you’re unable to get in touch with anyone or use all the other benefits your phone has. That’s where the Tattu 2-in-1 wall charger comes in to help. This charger not only helps turn an AC outlet into a USB port, but it charges so you can give your devices energy on the go.

With the Tattu charger, it gives you the ability to turn an AC outlet into a USB port. If you have a device plugged in, it will first charge your device before charging itself, so keep that in mind if you’re looking to travel with it.

After plugging it into the wall, it took about an hour for it to be fully charged. There are four blue dots on the side so you know how close it is to being fully charged. These also let you know how much power is left in it when you’re using it on the go. It is incredibly easy to bring on the go and doesn’t take up a lot of room in my travel bag.

When I charged my iPhone SE with the Tattu 2-in-1 Power Bank wall charger, it took about an hour and a half to get it from 18% to 100%. The Tattu charger also gave me about two and a half full charges worth.

Features:

High-speed charging

Charge your phone, tablet, GPS system, game consoles, or anything else that uses USB charges

Compatible with almost every type of phone and tablet

Can be charged from any AC outlet

Charging takes about 1.5 hours

USB Output Voltage: 5V(4.75-5.25V), port 1: 1A, port 2: 2.4A

5200mAh Capacity

[morepower2018-blog]

What’s The Ovonic?

As a leading electronics manufacturer, Ovonic battery offers good quality & mid-tier performance which is great for practice. It is dedicated to the most up-to-date electronic products. Ovonic continuously invests in the development of more efficient & environmental friendly power products. We provide fast order shipping, friendly service for our customers & the Best Value in Batteries!