What Size Zamp Portable Solar Panel Kit Should I Buy?

Use this matrix to find a Zamp Solar Portable Solar Charging System that’s right for your batteries

Very common batteries found in RV’s are group 24, group 27 and 6 volts. A battery bank is referred to as multiple batteries connected to create a single voltage system, in our case they need to be connected to form 12 volts. These batteries can be connected in parallel, series or parallel & series (4 – 6 Volts) connections to form a bank. Below is a matrix to guide users as to what Zamp Solar Portable Solar Charging System will work based on their battery or battery configuration.

While using this chart keep in mind that our estimation is based on users that care for their batteries using only 30-50% of the battery capacity before recharging. For example in an 80 amp hour battery there is between 24 and 40 usable amp-hours before it should be recharged. Using batteries this way will reduce the amount of stress they see and will help extend their usable life. Pair this knowledge with a solar charging system that not only charges up to 100% but also maintains the battery when full and users can expect to see their battery life be extended 2 to 3 times. Instead of replacing batteries ever 2-3 years they can now be extended to 6-8 years, saving money and time.

Other factors that will determine the proper sized Portable Solar Charging System

  1. How much power do you use on your adventure?
  2. Where do you plan to do most of your camping?
  3. What time of year do you camp most frequently?

Daily Power Use

It’s important to understand how much power is used on a daily basis while out in the field to best size up a battery bank and solar system. The size of solar needed can be determined by calculating how much average energy is used out of a 12 volt battery in a 24 hour period. That energy consumption is replaced by solar the next day.

Camp Location

Campers in the Central and Southern U.S. generally can get by on a smaller Portable Solar Kit as compared to those in more Northern States. Southern areas generally get more hours of sun with less rainy, cloudy days. Our solar panels will still charge a battery bank during cloudy days but the charge will be diminished. Calculating an average for daily sunlight helps narrow down a solar system for battery recharging. Our solar panels can charge batteries under moonlight and florescent, albeit it be small.

Time of Year

Time of year is an important factor for selecting a solar system. The quality of sunlight is an important factor when selecting a solar system. Short days with frequent clouds and unpredictable sun exposure can drastically cut down on the amount of power a solar system can deliver for battery recharging.

Key Features –

  • Class A Crystalline Solar Cells with a 25 year power output warranty.
  • All of our solar charge controllers feature Pulse Width Modulation (PWM) technology. This is an algorithm that will the solar charge controller to communicate with the battery to determine at what voltage the battery needs to best charge. For any solar unit under 600 watts PWM technology is better suited for battery charging as it uses less energy for voltage controlling operations.
  • New wires and Zamp Solar wire system. Our older wire design featured an Anderson wire connector. These types of connectors make a great connection but are bulky and the soldering often takes a beating in a mobile application. Our new wires are pre-molded by an American company in Chicago and have a longer life when used in an applications such our portable solar system. By having our plugs pre-molded we take the potential weak soldering out of the equation and reduce bulk greatly. An added benefit of our new wires is the RV resistant coating mixed in with the sheath. Wires that are used in an exposed environment will have a 15 year estimated lifespan.
Technical Details –


Portable Size Watts Amps/Hr Weight Dimension Open Dimension Closed
USP1005 45 2.5 14.5 lbs. 21.75x20x1.5″ n/a
USP1001 90 5 28 lbs. 42x22x1.5″ 21.75x20x3″
USP1008 140 7.8 33 lbs. 41x35x1.5″ 21x35x3″
USP1003 180 9.4 39 lbs. 40×39.5×1.5″ 20×39.5×3″
USP1004 230 12.8 50 lbs. 54x40x1.5″ 27x40x3″

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