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The Victron Energy BlueSolar PWM Duo-LCD&USB 20A charge controller charges two batteries with LCD display and dual USB outputs, and at $29.50 (down from $59.00) it's an affordable deal you can buy online at PowerHaven Outpost.
Categories : Solar Charge Controllers
SKU : POW-SOL-089
The Victron Energy BlueSolar PWM Duo-LCD&USB 12/24V 20A Charge Controller manages solar charging for two separate batteries with a full LCD, dual 5V USB outputs, and a low-voltage load output. It's the best fit for RV, boat, and off-grid owners comparing budget-friendly branded controllers. Current price: $29.50, down from $59.00 — buy online and apply coupon OUTPOST12 for an extra 12% off.
The Duo-LCD&USB has a dedicated low-voltage-disconnect load output — connect 12V loads like lights, fans, and fridges to the LOAD terminals so they auto-disconnect before your battery is drained. The load output is protected against overload, short circuit, and reverse polarity. Never run loads through the USB ports; those are for charging phones and small 5V devices only.
Via the programmable menu on the LCD, set the charging current ratio between the two battery banks — for example 80/20 between a start battery and house battery — and configure the three-stage profile (bulk, absorption, float).
$29.50 vs the $59.00 compare-at price saves you 50%. Coupon OUTPOST12 adds 12% more; orders over $45.00 ship free.
Charges two separate batteries with a programmable current ratio — dual-bank control at a 50% discount
Built-in LCD plus dual 5V USB outputs for phone charging at just $29.50
Protected low-voltage load output prevents dead batteries, with extra 12% coupon savings
Extras: LCD, 2x USB 5V, load output, temp sensor
Product Type: Solar charge controller
Battery Banks: 2, programmable ratio
Charge Current: 20A
Model / Series: BlueSolar PWM Duo-LCD&USB
System Voltage: 12/24V
Seller: PowerHaven Outpost
Running two batteries from one solar array is the problem this controller solves — with automatic dual-bank charging, USB outputs, and battery protection.
Full programmability, three-stage charging, external temp sensor, and protected load output — rarely found at this price point.
$29.50 sale | $59.00 compare-at | 50% off | Extra 12% with coupon OUTPOST12 | Free shipping over $45.
Buy it here at PowerHaven Outpost for the current price of $29.50.
Yes — a protected low-voltage load output handles DC loads and disconnects them before over-discharge.
No — the USB ports are 5V device-charging only; connect 12V lights to the load output terminals.
Use the programmable LCD menu to set the charging current ratio, e.g., 80/20 between start and house banks.
At $29.50 vs the $59.00 compare-at price, it's a 50% discount — and coupon OUTPOST12 saves another 12%.






This little unit charges both my starting battery and my fridge battery from a single 200W panel. The LCD shows everything I need at a glance and the USB ports keep my phone topped up. Set it up in twenty minutes and haven't touched it since.
Been running for six months in my shed setup. Zero issues, display is easy to read.
Victron reliability at a budget price. The PWM tech isn't as efficient as MPPT, so expect maybe 10-15% less harvest, but for the money this is hard to beat. USB ports are genuinely useful.
The default settings didn't match my AGM batteries so I had to dig into the menu to adjust absorption and float voltages. Once configured properly it's been running flawlessly for a month. Just know it's PWM, not MPPT.
We run lights, a water pump, and charge two phones nightly off this controller with a 300W panel. The dual battery output lets us keep a separate starter battery for the backup generator charged too. LCD is clear even in bright sunlight, and the whole thing just quietly does its job. Grandpa approved, and he's been off-grid since before it was trendy.
Mounted it by my passenger seat so I can glance at the display while driving. Charging behavior is sensible and the low-voltage disconnect protects my lithium battery. Only wish the USB output was a bit faster for newer phones.
Controller still charges but the LCD went blank and the backlight died. Frustrating since monitoring was half the reason I bought this model. Waiting on warranty support.
Third Victron product in my system and the consistency is why I keep coming back. Clean charging profiles, sensible defaults, sturdy construction. The half-price deal made it a no-brainer for my second setup.
Two batteries, one panel, no fuss. Wish the mounting flanges were a bit beefier but it holds fine on the wall of my garage.
Orders over $45.00 ship free. Otherwise, shipping is $8.00.
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