Victron Energy SmartSolar MPPT 100V 30 amp 12/24-Volt Solar Charge Controller (Bluetooth)

The 75-15 units work great and stay cool under full load. They work as advertised. That said, the 15A output limit doesnt give you much at 12V (200W) or 24V (400W) (my battery system is 24V LFP), and I made the mistake of undersizing the charge controller against my solar which runs 500W+ in full sun. Hence why I was able to make the comment about them staying cool under full load :-). So I recommend buying the SmartSolar MPPT 100-20 instead of the 75-15. The price point is still very good and those 5 extra amps can make a difference. Plus the 75-15 is limited to 24V battery systems while the 100-20 gives you the flexibility to move to a more powerful 48V battery system in the future. I also have two 100-20s. When maxed out at 20A they generally clock in at 60C and dont go much higher, so not as cool as the 75-15s. But the 100-20s are far more capable, and can handle 12/24/48V without issue. A low speed fan is all it takes to keep them in a nice comfort zone while pushing 20A to the battery. Im running 70V VOC and 80V VOC (roughly) strings with no issues into these controllers, so the input amps and losses are very low. Thus the charge controllers are limited only by the output amps. The control and programming features are great. Ive used the load output directly and the virtual load output (basically a relay control output) as well. There are a few quirks with the direct load output, it cant handle surges at all really, even short ones. The battery profile is completely customizable and output amps can be limited. I actually used one of my 75-15 charge controllers as a high-efficiency level shifter going from a 24V battery to a small 12V battery at one point using the customization to limit the current. -- It would be nice if the load output could handle more current and capacitive inflow currents on start. I have used the load output on 24V systems at around 15A without issue driving resistive loads. But just like the Victron battery-protect stuff, these FET-switched load outputs cheap-out on components and just arent very capable despite the rating. It would be nice if Victron could improve on them but I wont subtract a star since it isnt really the primary function for the charge controller and the virtual-load output works quite well. In fact, one can use the actual load output to switch certain other FET power switches, (or relays, or contactors) very quickly since they are capable of decent gate currents verses VE TX port. So there is versatility here that I like.

good little controller. The terminals are very flimsy & cant get 8 awg or even 10awg wire in without stripping cable stains down! Connection problems they come loose or fall out. It wont charge of they are loose! They are to close together & might short out… make sure u use strain reliefs & zipties. After tgat i was able to get it to work…Manual to small to read & obtuse! No customer support ur on your own here!

This is just to provide some comparison between these MPPTs when i am in search of one that suit my needs. The test being done in various conditions, multiple PV configuration and repeated at least 3 times to eliminate some quick and easy judgements. Honest observation during test found that each MPPT here has their own strength and weakness, but all seems are good quality one. None of these result determine anything about reliability and longevity of the MPPTs and no intention to favor one from the others as they are different from their price point and strength/weakness as mentioned above. And by no means this was the absolute result since product batch, setup/configuration and environment condition may differ from time, application and place perspective. Component of tests: - 4 x 300W Monocrystalline Solar PV - 280Ah LiFePo4 Batt 12V - 150A Smart BMS - AMPINVT MPPT 150/40 - EPEVER MPPT 150/40 - VICTRON SmartSolar 100/50 (*) Victron is the only MPPT has higher specs of amp (50A) while the other 2 are 40A, but AMPINVT and EPEVER has higher volt (150V) compare to Victron (100V) Key Performance Indicator: - Tracking time and amount of current (amp) generated in various conditions a) Series/Parallel, and combination of Series and Parallel of PV b) Combine multiple MPPTs (parallel) in same system c) Cloudy/Shading and Full Sun radiation performance Test Method: - To measure the current generated by each MPPT, i use the battery BMS across all the MPPTs so this will eliminate AMPINVT/EPEVER/VICTRON specific calculation and calibration on each of their device. - Using external amperemeter (BMS) will make the judgement square and fair between the 3 MPPTs and objective(not subjective as per vendor specific) Build wise 1) AMPINVT - If i could choose, i would like all the MPPT being build like AMPINVT. - It is very nice solid metal all-round, 2nd most heaviest and the connector style for batt and PV are full clamp type which is good one. - The only complain on this 150/40A series is the connector very small for 4AWG cable size (batt), it is impossible to fit in 4AWG cable in the batt connector. 2) EPEVER - The heaviest and biggest among the 3 MPPTs and the shape a bit awkward for me - Solid build and provide more heat-sink surface to dissipate heat - Among the 3, the connector type on EPEVER is the worst in my opinion, it was pinch style with screw so it doesnt have good amount of contact and holding power, however the connector size is HUGE!, 4AWG size is not a problem at all. 3) VICTRON - Being the smallest (less than half-size of EPEVER!) and the lightest of all - All metal case with heat-sink on the bottom - Connector style similar to AMPINVT and the size is also small, impossible to fit 4AWG cable size! Tracking Time - No doubt AMPINVT is the clear winner here for tracking time, it is very fast compare to VICTRON and EPEVER, VICTRON took almost double the time to reach maximum power point while EPEVER being the slowest of all. - However, this is very important and i almost didnt notice it first till i repeated the test , albeit AMPINVT tracking time is the fastest, the amp generated is not steady, it is fluctuate between 2A(min) - 6A(max) from the max current generated, it seems AMPINVT was very active re-scanning the maximum power point in looping mode and sweeping through the current between 4-7 seconds. - Due to unsteady current generated by AMPINVT, this may reduce the total amp-hour produced even though the tracking time is the fastest (quick/shortest). Cloudy Day - In 2S PV setup, all 3 produced very similar amperage. - In 2S2P PV setup, VICTRON has perform slightly better on cloudy day (by 0.3A - 0.6A) after multiple test reading, while AMPINVT being the last one. Shading Problem - In 2S PV setup, VICTRON and EPEVER produced slightly more amperage compare to AMPINVT. - In 2S2P PV setup, 2 out of 5 test reading shows EPEVER generated slightly more amperage compare to VICTRON (by 0.4A - 0.8A) Full Sun radiation - In 2S and 2S2P PV setup, i cant really tell since the max amperage for AMPINVT and EPEVER already reached (40A), while VICTRON has 50A max, thus VICTRON constantly produce more amperage by 6A-8A higher than the others. Conclusion - AMPINVT has very attractive price point, pretty compact but loud (fan noise) and the really downside is unsteady amp generated, however if system small enough (less than 600W) with 2S PV config only and very limited budget, i think AMPINVT is quite difficult to resist here, since the remaining 2 options is twice or thrice the price. - VICTRON is long known name in MPPT worlds, no doubt it could be the best and the test result telling not far from the tale, however this is the most expensive one in the similar class, if budget is not an issue and you want to build very compact (small) system then it is no brain to not pick up this one. - EPEVER, this MPPT perform similar as VICTRON in many ways and perhaps slightly better in shading scenario, can do over paneling up to 3x the power specs (3x520W=1560W) is huge advantage but due to size you need bigger space, but i guess the the best bang for the buck on this class.

Im no electrician, so I didnt know this had to be programmed. I thought I could just connect my solar panels and battery to the controller and it would do the rest. It worked fine like that for two months, then my batteries dropped to 0% with no real reason. Its still a mystery! You have to install the app for the device and input the battery settings via bluetooth. Theres no other way to do it. But after that, its been working great with my setup.

I installed two of these solar charge controllers about seven days ago. They seem to be working great. I also installed Victrons smart phone application and was able to promptly update the firmware and monitor their measurements via Bluetooth on my phone. I would definitely buy these again.

At first I ordered a budget MPPT charger, only to learn later that in order to program it to use a Lithium battery required ordering another part, which makes it not such a bargain after all. After reading reviews on Victron stating how easy this model is to program, I decided to try one for myself. It was indeed very easy to setup the unit on my iPhone, and switch the default setting to lithium. I enjoyed watching the charge history from day to day. The Bluetooth connection is strong enough to connect from pretty far away. Im really enjoying using the application. The solar charger is working great. Id definitely buy one again.

Ive been using this charge controller for over 2.5 years now. This is the best MPPT charge controller I have used. The bluetooth feature is great though it is pretty short range. The app is nice, easy to use, and keeps track of the power generation data and charge state of the batteries. It keeps a 30 day log of things like max daily PV power output, time spent in bulk, absorption, and floating charge modes, and how much energy was generated each day and a lifetime total. To date my small 600w system has generated over 1.5 megawatts of solar energy. A big plus and one of the main reasons I got this unit is that it is passively cooled by fins on the back. No moving parts and no loud fan. Installation was a breeze and I like that you can add more of these in parallel to increase your power generation if needed.

Added this as a second controller to our RV. Works well so far and easy to wire and setup.

Excellent

Not much to say. It works as advertised is is very high quality. Well worth the money. I will be buying more Victron products.