NEXPEAKNC201 10-Amp Battery Charger, Smart Trickle Charger 12V 24V Car Battery Charger Fully Automatic Maintainer Desulfator w/Temp Compensation for Car Truck Lawn Mower Boat Marine Batteries

I needed it to charge the Battery of the Buick Minivan (800Ah) and my truck Ford Ranger (850aH). After I bought it I read a review from one user that this charger does not charge a 800Ah battery so I was worried this won't charge my batteries. I tried to charge the Buick first without disconnecting the battery in STD mode, noticed after started with the initial the DFS, the Buick fight back, I guess the protection so when finish with the DFS, it shows that is charging and the next 1-2 mins show full. Not true, a multi-meter still show 2 DC volts. Put it in my Ford Ranger 96 without disconnecting the battery and after DFS voila started to charge, you will see that is charging because on the right side of the screen shows percentage and it is going down until reach the level of charge it is, my case less than 20 % so it stays there and now blinks going up, after leave it charging over night, boom, battery fully charge. Went back to the Buick, disconnected the POS of the battery and connected the charger, boom, over night battery full charged. Did what I bought for what I needed this charger to do. That was my experience with this charger. I can tell it works also for batteries above 800 ah.

I've searched several online and local stores for a 10 amp charger and couldn't even find a lower amperage one that is less expensive. Note, I said "less expensive", not cheaper. works very well. It charged my Jeep AGM battery sometime overnight to 100%. The battery had a very low charge , only enough to power the courtesy lights when door was opened....but "dead" if I tried to start. As recommended by the instructions, I let the charge continue until the FUL message was displayed. My older charger would not charge at 10 amps. The display is bright and easy to read. Just remember to select the battery type and pay attention to the connect and disconnect instructions. Construction, fit and materials look as good a more expensive units I examined. The clips are a bit small, but use an integrated piece of metal to connect to the charger cables. They are not copper, but appear to be steel. If you connect the clips backwards, the display will warn you. Very quiet and cool. This unit was manufactured in China...not my first choice, but check the box, it appears they are manufactured in more than one country.

Works exactly as intended. My car was parked over the winter and I needed to get the battery back to life + hold charge. It was able to get the battery to the 12.6 range in about an hour using the STD mode. That was good enough for the car to start but in order for it to hold charge over night without relying on the alternator, I switched the mode over to Motorcyle/Trickle to slowly boost it up to ~13.8 over a few hours and it held charge over a 30 degree night. It was much faster than I was expecting. It's a great tool to pick up.Side note: I see a lot of people struggle to change the mode, there is a touch button with a fingerprint icon on the unit labeled "Mode Selection" (Crazy I know LOL). According to the manual it locks itself after 25 seconds if no changes are detected, so you have you reconnect the clamps to be able to change modes again.

Pros:- I really like the size of this charger.- It seems to work well and lets you know when charging is complete.- after connecting the battery, before plugging in the charger, it shows battery state. I like that it shows the current voltage.- once charging starts, it cycles through information such as voltage, current amperage, temperature. It has a nice battery level “stack” showing progress.- nice strong clips for connecting to the battery.Cons:- the display is difficult to read unless up close. This is a problem in any lighting conditions. It’s just hard to see.- when connecting it to the battery there is always a big spark and loud beep. Talk about startling a guy! This is before being plugged into an electrical outlet (I always connect the battery before plugging in the charger). This unit draws from the battery to show battery state - it must draw a lot considering the size of the spark.- the cables are WAY too short. Although shorter cables are nice when putting the charger away to store it, that’s definitely not the case when in use. Both the cables to the battery and the power cord are quite short. This means you have to have the charger right next to the battery (you can’t put it somewhere easier to see when you’re not right there). You will need an extension cord unless you take the battery out of the vehicle and set it right next to an outlet.- the mode settings selection has, among others, std and wet cell… in my mind a standard lead acid battery is a wet cell. The manual says wet cell is for heavy duty batteries requiring higher current so I’m using std for both my cranking and deep cycle batteries. It seems to work fine.- you can’t change the mode after a while which is good, but touching the display anywhere close to the mode button surprises you with a loud beep. It seems like every time I try to adjust the position of the charger, I accidentally touch that and get startled with the loud beep.Notes (not good or bad):- when charging is “complete” the display shows FUL, but the charging isn’t really completed until it shows OFF.- make sure to select the correct battery type right away as part of your connection sequence.

I got this charger for work to pre-charge/maintain 12v and 24v battery arrays for UPS units. Out of the box, make sure you remove the protective film or else the capacitive touch mode selector does not work very well. Otherwise it does everything I need it to do. So far I pre-charged a few massive 12v 160 Ah batteries with it, along with some 24v 64 ah series+parallel battery sets no problem. The OLED display is easy to read in all lighting conditions, and I like the capacitive touch button because no wear and tear. The fan is somewhat loud, but for what I do with it, that is not an issue. Cheap and simple device to simply charge batteries.