Tenergy 5-in-1 Battery Meter, Intelligent Cell Meter Digital Battery Checker/Balancer for LiPo / LiFePO4 / Li-ion/NiCd/NiMH Battery Packs

Very useful

I have at least two other meters for measuring battery voltage and one that measure power also. But they don't read the internal resistance (IR) of my LiPo batteries. This one does and I think that is quite important for understanding your LiPo battery status and knowing when they should be retired. This meter provides that measurement for each cell. There are no instructions with the meter however, and I had to resort to YouTube to find how to use this - I might suggest you check out one of those before buying. There are other functions provided by this meter and I will need to do some exploration to see how to use those other capabilities. A simple link to some instructions would be very helpful.If you don't know how IR affects use, simply add up the IR for each cell (they are shown in mill-ohms) and multiply by the current you expect in operation. This will tell you how much voltage you drop at the battery. Take the square of the current times the IR total and that's what your battery looses as heat due to the IR. If the total IR for a LiPo averages more than 10 milli-ohms per cell, it's likely time for retirement. Note - you will see that the first and last cell are where most of the degradation happens.This is a good product, but some use information would be VERY useful.

Good and inexpensive balancer/cell meter with a nice screen. This is sold for more under different brand names from other places. (the same unit) Not super intuitive but the instructions are pretty simple. It balances and reports on Lipos. In the lower right hand corner it shows the percentage of charge you have which is nice. It can take a long time but I think that is just the nature of balancing. I tested it on a 2s Lipo and 3s. Balancing is pretty easy, Just make sure you have the right type of battery selected (for example, make sure it detects LiPo 3s) then hold down Cell for a second, it will say "Bal", then press Cell again and it will begin balancing. Once it is really close, it will make a short beep. I find it best to start balancing as soon as you are done using it and then during charging. (balancing after it is charged isn't as good from what I have read)I cannot figure out how to use the discharge feature to get it to 3.8v per cell for storage. I would like to use this feature though.The NiMh functionality is just to show voltage. (Like a voltmeter would) You would need some kind of special adapters for this. (a cable that goes from whatever your battery connection is down to the little white plug that this takes) I don't see the point. I have a $10 volt meter for that. I can't think of a good reason to want to monitor a NiMh batter anyway, other than voltage. It doesn't come with the cable that you would need to check NiMh batteries but I doubt it is worth pursuing it. For LiPo batteries however, this is a very useful device.

Caution, there are products that look exactly like this unit, without all its features. That's why this one costs a bit more. This does internal battery resistance which is very helpful. It reads voltage of each cell and percent of battery remaining as well. It has a battery balancing feature but the manual states that you should only do this for 5 minutes at a time and allow the unit to cool. Overall, I really like this and only gave it 4 stars because the instruction manual could be better.

A essential tool to have as a hobbyist that deals with lipo batteries on a daily basis. Works perfectly and is compact enough to slide in your pocket to take with you when you’re out with your RC! Super easy to use, you can check vital information on your lipos to help keep them maintained.

Works perfect for testing my batteries for my RCs quick test when I'm in field see where the batteries are at. I would recommend the b-6 charger if you're going to use this device to discharge a battery. I don't recommend using it to discharge it's not good for it. It is made to check the cells, and balance the cells if you do not have a balance charger.

I like the fact that it will balance the cells

Good tool to have , well worth the low price

Llego con agua el producto, lo dejaré secar y posterior checarlo

I have several battery testers, but this Tenergy is the most useful.While many testers of the same style will only test the voltage of your cells or pack, this one offers some extras:- it can test the internal resistance of your lipo cells.- it can balance your Lipo packs.- It can discharge your packs (while this feature works, it should only be used for about 6 minutes, according to the manual, to avoid overheating).- it can test servos.Switching between these modes is pretty easy and the display will give you an indication of what mode you've selected using two/three letter words for each mode.In addition, it does provide these basic features:- lipo voltage alarm, which will beep when your set voltage is hit. To be honest, this battery tester is too large to be used as a voltage alarm in most RC vehicles, but it does work.- Can tell you the individual cell voltages.- It can tell you the min and max voltage for your cells.- It can give you the voltage difference between the highest and lowest cell.I've used this to test multiple LIPO packs (it helped to confirm that two were in need of being replaced) and several NIMH packs. To test a servo, you will need to connect a battery via a servo-style plug (made an adapter that connects to my deans plug batteries).The servo tester function is nice, and it works, but I prefer servo testers with knobs so you can also test servo speed with ease.Overall, this is a great battery tester, especially if you have LIPOs. It is compatible with other battery chemistry, like NICD and LIFE.

Good

サバゲーの電動ガンのリポバッテリー用として購入。今まで使っていたのは、放電機能付きのありふれたバッテリーチェッカーだったのですが、これに乗り換えた大きなポイントは、バッテリー残量が％で表示してくれる。という点です。無難に使いやすく、放電機能も付いてるので、これ1台で済ませれます。ついでに日本語説明書も付いており、分かりにくいですが無いよりかは良いですし、個人的には文句無しの星5つですね。

battery tester