PRODUCT DETAILS
The Zamp Solar ZS-15AW is a 15-amp, 5-stage PWM solar charge controller for 12V systems that regulates up to 250W of panels and works with lithium, gel, AGM, flooded lead-acid and LTO batteries. Its large digital display shows voltage, current, amp-hours and faults, it mounts on or in the wall, and it accepts the Zamp battery temperature sensor. Genuine Zamp Solar with a 2-year warranty, backed by Go Power! support, at outlet pricing.
Keep your Zamp system running
Go Power! and Zamp Solar are both part of Dometic, and this store is the home for genuine Zamp replacement parts. The ZS-15AW is the direct replacement for the controller supplied with Zamp roof kits and solar-ready RVs, using the same wiring and mounting.
Five stages, every chemistry
PWM regulation with five charging stages protects the battery from overcharge, extends its life and blocks reverse current to the panels at night. Select the battery type on the display and the controller applies the right voltages, with the optional temperature sensor compensating in hot or cold weather.
Which controller?
15A covers up to 250W — one or two Zamp panels. For MPPT efficiency and RV-C integration on new builds, see the Go Power! GP-RVC-30-MPPT.
FEATURES
- 15A PWM, regulates up to 250W of 12V solar.
- Five-stage charging protects and extends battery life; blocks night-time reverse current.
- Battery types: lithium, gel, AGM, flooded (wet), LTO.
- Large digital display — voltage, charge current, amp-hours, battery type, full-charge and fault indication; status LEDs.
- Surface or flush mount, indoor.
- Compatible with Zamp battery temperature sensor.
- Compact 5.1 × 4 × 1.1 in.
- 2-year warranty, North American support team (part of Dometic).
- Outlet pricing — genuine Zamp Solar, brand new, limited quantities.
WHAT IT RUNS
Sizing guide for a 12V system: a 15A controller handles about 250W of panels. Daily harvest assumes 4.5 peak-sun hours at about 70% of nameplate, which is typical for a flat-mounted RV array. PWM controllers need panels whose operating voltage matches the battery (18–22V 12V-nominal modules) and should be wired in parallel. Use 10 AWG between controller and battery.
| Array | Nameplate | Typical daily harvest | Wiring |
|---|---|---|---|
| 1 × 100W panel | 100W | ≈ 0.3 kWh/day (≈ 25Ah) | Parallel (18–22 Voc each) |
| 2 × 100W panels | 200W | ≈ 0.6 kWh/day (≈ 49Ah) | Parallel (18–22 Voc each) |
SPECIFICATIONS
| Model | ZS-15AW |
|---|---|
| Brand | Zamp Solar (part of Dometic) |
| Type | PWM solar charge controller, 5-stage |
| System Voltage | 12 V |
| Max Charge Current | 15 A |
| Max Solar Input | 250 W @ 12 V |
| Battery Compatibility | Lithium, Gel, AGM, Flooded lead-acid, LTO |
| Lithium BMS Wake-up | No |
| Remote Display Compatible | No |
| Battery Temperature Sensor | Compatible (sold separately) |
| Display | Digital LCD + status LEDs |
| Mounting | Surface or flush (indoor) |
| Dimensions | 5.1 × 4 × 1.1 in |
| Warranty | 2 years |
COMPARE MODELS
| Controller | Type | Charge current | Max solar | Battery banks | Lithium | Monitoring | Certification | Warranty | Best for |
|---|---|---|---|---|---|---|---|---|---|
| GP-SB-PWM-10 | PWM | 10A | 200W @12V | 1 | Yes (12V) | LCD on unit | — | 2 yr | Single 100–200W panel, simple install |
| GP-SB-PWM-30-BT | PWM | 30A | 600W @12V | 1 | Yes (12V) | LCD + Bluetooth app | — | 5 yr | Most single-bank RV kits; OEM replacement |
| Zamp ZS-15AW (this model) | PWM 5-stage | 15A | 250W @12V | 1 | Yes | LCD on unit | — | 2 yr | Zamp kit replacement, outlet price |
| Zamp SCC1011 | PWM 5-stage | 40A | 760W @12V | 1 | Yes, BMS wake-up | LCD + optional remote | — | 2 yr | Larger Zamp arrays, outlet price |
| GP-MPPT-85/15 | MPPT | 15A | ≈220W @12V / 440W @24V | 1 | Lead-acid default — check manual | LEDs | IP68 sealed | 5 yr | Exposed/marine mounting, small array |
| GP-RVC-MPPT-10 | MPPT | 10A | 150W @12V | 1 | Yes (LiFePO4 profile) | Optional GP-RVC-R / RV-C | Not UL listed (US aftermarket) | 5 yr | One-panel RV-C systems, vans |
| GP-RVC-30-MPPT | MPPT | 30A | 600W @12V / 1,200W @24V | 2 (house priority) | Yes (LiFePO4 profile) | Optional GP-RVC-R / RV-C | Not UL listed (US aftermarket) | 5 yr | Motorhomes: house + chassis from one controller |
| Dometic SC-DB-MPPT-30-12 | MPPT | 30A | 600W @12V | 2 (secondary ≤2.5A) | Yes | PowerTrak™ display (RV-C) | FCC Class B, RoHS | 5 yr | PowerTrak™ systems, 12V dual bank |
| Dometic SC-DB-MPPT-40-12 | MPPT | 40A | 900W @12V | 2 (secondary ≤2.5A) | Yes | PowerTrak™ display (RV-C) | UL 1741, FCC Class B, RoHS | 5 yr | Largest arrays, UL-listed PowerTrak™ installs |
| GP-PHANTOM | MPPT + alternator DC-DC | 30A | Solar + alternator inputs | 2 outputs | Lead-acid default — check manual | LEDs | IP68 sealed | 5 yr | Overland/fleet: charge house bank from solar and alternator |
MANUALS, SAFETY INFORMATION AND DOWNLOADS
ACCESSORIES
FAQ
How much solar can I connect to the ZS-15AW?
Up to 250W of 12V-nominal panels wired in parallel — one or two Zamp 100–120W panels. Do not series-wire panels on a PWM controller.
Does it work with lithium batteries?
Yes. Select the lithium type on the display. For a controller with lithium BMS wake-up, see the 40A SCC1011.
Will it replace the controller that came with my Zamp kit?
Yes. It uses the same wiring and surface/flush mounting as the controllers supplied with Zamp roof kits and solar-ready RVs. Match the amp rating to your array.
Is Zamp Solar still supported?
Yes. Zamp Solar and Go Power! are both part of Dometic, and genuine Zamp replacement controllers, panels, cables and mounting feet are sold here with North American support.
What's the warranty?
Two years against defects in materials and workmanship, backed by Go Power!'s North American support team (part of Dometic).
What does outlet pricing mean?
Brand-new, unused units sold below regular price while we clear this stock. Quantities are limited and not guaranteed.
MPPT or PWM — which do I need?
PWM is a switch: it connects the panel to the battery and chops the current, so the panel runs at battery voltage and you lose the difference. MPPT converts the panel's higher voltage into extra charge current, harvesting 15–30% more from the same panels, and lets you wire panels in series. For one or two panels on a simple 12V kit, PWM is cost-effective; for 300W or more, lithium batteries, or long cable runs, MPPT pays for itself.