Tenergy TN438 16 Bay Battery Charger for AAA and AA Rechargeable Batteries, AA/AAA NiMH/NiCd Rechargeable Batteries Charger with AC Wall Adapter and Car Adapter

This battery charger is the best one I've ever purchased. It came with the charger, an AC wall plug, and a DC car plug. I have only two issues with this charger, and both are not with the charger itself. PROS: - The charger ACCURATELY charges a very large variety of batteries (speaking strictly of mAhs) simultaneously. - The display is very easy to read. - As the specifications show, it does charge each battery independently. - The discharge functionality of this charger helps maintain battery life and provides a clean charge. CONS: - The charger itself has no real cons. - The manual provided, in short, sucks. Nothing in this product tells you how to switch from CHARGING to DISCHARGING, and visa versa. Nothing in this product or manual tells you how to turn on the LCD back-light. The words on the display of this charger which conveys the state of the charging process are truncated versions of the words, CHARGE, DISCHARGE, and ERROR. I know it sounds somewhat dumb, but there are a lot of people who will not understand what ERR means. In fact, the word ERROR in itself is ambiguous enough. - Before purchasing this product, I spent a few hours hunting down the same brand but with a 9V battery charging slot. While this brand did have a few, it was with the sacrifice of a large number of AA/AAA charging slots. Additionally searching outside of this brand was of a different make and model where the specifications of such did not clarify what I was looking for, or I needed to accept a substantial downsize with a substantial increase of cost. As great of a product as this is, I did not like having to settle for this product. Over all, I love this product. It works GREAT with Tenergy Premium & Energizer batteries. I would definitely recommend this product, or even a smaller version of it to friends and family.

Review of the 16 bay Tenergy charger. MY NEW FAVORITE HIGH VOLUME CHARGER. First of all I have probably bought nearly every decent charger over many years and this one is my new favorite. I also have the 12 bay version from years ago (still being sold) and that one was a little too finicky about being too sensitive to very low voltage / depleted batteries not being recognized (which required instilling a minimum charge using an old basic “non-smart” charger that doesn’t analyze minimum voltage) . NOT this one … it is pretty much near perfect compared to many others offering volume charging bays like this one. For example I had over 60 new AA & AAAs batteries still in their original package for several years I had forgotten about in some misplaced box that certainly were well depleted by now and decided I better open them and instill a charge using this new charger. Everyone battery except 1 was recognized and charged them all. NOTE this has “REFRESH” capability to discharge then recharge (optimize capacity & longevity), many high volume chargers do NOT have this feature. This charger is great if you have a lot of batteries and you need to simply keep them charged every few months just to keep them from getting too self-discharged, or if you have a smaller number of batteries where you can charge them all in one shot instead of swapping them out every several hours as with typical 4-bay chargers. I have many chargers from all sorts of manufacturers and many seem to stop charging too early, not fully topping them off or don’t have a discharge/recharge option. I also love the LaCrosse & PowerEx 4-bay chargers that offer a lot of charging control and are great for a small number of problem batteries that needs better attention to recovery. But with only 4 bays, it’s not practical if you have many that need charging. Those are best for intensive care purposes. But for volume charging - this one is the best I’ve come across. If you looking to a volume charger, don’t buy one without the Refresh or Discharge/Recharge option. This is the best in class for high volume chargers.

This charger works great and is very easy to use. It's almost foolproof if there's such a thing. We love that we don't have to buy new batteries all the time and throw old ones away. The convenience of it would be enough, but we're also saving money and trashing fewer batteries. We're happy.

Tried out my unit as soon as I got it. Overall did well. Was surprised to find that Duracell AAA high capacity batteries I had just purchased from the local drug store were not fully charged. Charged every battery I had that were rechargeable. Only had trouble with two old sets of batteries, the no-name Apple sold batteries and some high-capacity Tenergy batteries that had never been used. Both sets were quite old, at least 4 years. After 8-10 hours they were still charging, I felt them, they were all quite hot, at least 120° each. I pulled them out, checked them with battery checker, which indicated they were in the green zone. I kept them, set aside, in a small freezer bag. I suspect they won't hold charge long and will have to be discharged sooner rather than later. So, the charger works, the circuitry seems unable to reliably determine when batteries are charged or not and keeps trying. If the batteries are old or defective they do get hot and that could be a problem. Would recommend checking all batteries after 8-10 hours and check them manually, especially if they seem hot. The power cord is adequately long, about 6 feet, but only connects from the right of the unit. There are no other ports on the unit, so no facility for firmware updates or anything, a bit surprising.

So much better than my old 4 bay chargers. I have to wait and see on durability, but out of the box it great at charging multiple batteries and identifying bad batteries.

Keeps my AA and AAA batteries charged and ready. Charge time seems much better than the older Tenergy charger this replaced.

Carga 16 baterias Aa o Aaa al mismo tiempo con indicador de carga , funciona bien

Very nice

Charger does what it's supposed to, keeps all my batteries charged independently, few things we have noticed using the charger is it does have a quirk where depending on which slots you put the batteries in some slots seem to be tied together lighting 2 slots rather then one independent slot as it's designed to not sure if this is my unit being defective or if it does this with all of them. Also if the rechargeable batteries are close to the end of service life the charger errors out or will give up trying to charge those specific batteries, however it's to be expected just throw the batteries out if they get to that point. In all , this charger is perfect and gets the job done. I would buy again and suggest it to anyone who needs a great multi slot charger.

Me gustó el sistema de carga individual, si una pila esta dañada no detiene la carga de las demas.

Works great, you don’t need a minimum number of batteries at one time to charge them, some chargers will only charge if you have 2 or 4 batteries in them minimum. With this one you can charge 1 battery if you need to. The main electronic device I need to charge batteries for uses 3 aa batteries so this feature is great. Does take a while to charge though. (But I believe nimh batteries need to charge slowly so I guess it’s a good thing, but seeing as you can charge 18 batteries at once, it doesn’t matter as I do have many spare batteries). Also has a discharge function which helps maintain battery performance.