




🔋 Power your freedom with smart dual-battery control!
The 25A SPARK MPPT solar charge controller 12V Dual Duo is a compact, durable device designed to efficiently manage solar energy input up to 350W. It features dual charging ports for main and starter batteries, supports four major battery types, and delivers precise charging currents (25A main, 1A starter) housed in a sleek aluminum alloy shell.


| ASIN | B08YXN3Z2R |
| Batteries required | No |
| Best Sellers Rank | 47,636 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 45 in Solar & Wind Energy MPPT Controllers |
| Customer Reviews | 4.4 4.4 out of 5 stars (24) |
| Date First Available | 14 Mar. 2021 |
| Included components | Controller user manual |
| Manufacturer | SPARK |
| Manufacturer reference | SP5025 |
| Product Dimensions | 14.7 x 8 x 4 cm; 500 g |
A**R
Bluetooth Dongle
The dongle works perfectly with my Truma SDC25 MPPT controller and the bluetooth range is exceptionally good as well. Highly recommended
G**K
Bluetooth BT10 adaptor
Works with my truma controller, I sometimes have to unplug the get it to connect with the phone but overall works well
A**H
Perfect
Worked perfectly well with my MPPT
M**L
Works with mobile app.
Used with the Adamo motorhome solar charger and provides realtime information regards what power is being pushed from your solar panel to your leasure battery.
A**N
There is a 20amp fuse inside
I have used This controller for 2years some how one day it stopped working. The solar panel indicator was flashing ( the controller is waiting for a solar panel to be connected) .I thought I'd investigate so I removed the top 2 screws on both the front and back this released the top, and to my surprise and delight the 20amp standard car fuse had blown. It was difficult to pull out to replace, I installed a new fuse and the controller instantly started working...yes. I would think the fuse is a safety feature as my battery sides are swollen and must have caused a power surge back to the controller. The controller has worked flawlessly from the first day it was fitted and is still working flawlessly today. I also have the blue tooth option and this works flawlessly too . I would definitely recommend this unit too anyone. Although if you can afford it go for the next model up for better 2nd battery charging.
D**S
Would buy again. To monitor solar
Limited information on the app. But sufficient and informative Would buy again for my campervan
T**L
Wattage of solar panels
Works really well
N**N
Works with Truma SDC12 duo MPPT
Works fine and tells us when we are charging - helped us realise that we need hookup in the winter, the panels aren't generating enough to keep battery topped up.