Ameresco 420J 20W Solar Panel

Ameresco 420J 20W Solar Panel
Product Code: AM420J
Availability: In Stock
Price: £106.95
Ex-VAT: £89.13
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502mm x 425mm. 20W Ameresco photovoltaic solar panel. This Ameresco branded solar panel is a direct, identical replacement for the old BP Solar SX series BP320J 20W solar panel.

  • High efficiency photovoltaic module
  • Multicrystalline silicon cells
  • 20W Rated Power (Pmax)
  • 25 year limited manufacturer warranty* 

If your require any help or advice as how to incorporate this solar panel into your project please get in touch for friendly help and advice.


  • Includes internal Schotty by-pass diodes
  • High transmission, self cleaning 3mm tempered glass
  • Clear anodized aluminium alloy type frame (silver colour)
Easy Connection, IP54 Junction Box
The superb quality IP54 weather rated junction box at the rear of the panel provides a 6 terminal screw connection block. The terminals accept up to 6mm² (10AWG) cable. The junction box has knock outs to accept PG13.5, M20, 13mm conduit or cable fittings accepting 6-12mm diameter cable. 
Dimensions & Weight

Length 502mm x Width 425mm x Depth 50mm

Weight 3.0Kg

Electrical Characteristics

Max Power (Pmax) : 20W 
Voltage at Pmax (Vmp) : 16.8V
Current at Pmax (Imp) : 1.19A
Warranted Min Pmax : 18W 
Short-circuit Current (Isc) : 1.29A
Open Circuit Voltage (Voc) : 21V


Each panel comes with self tapping ground screw, instruction sheet and warranty document.

* Warranty

12 Year limited warranty of 90% output, 2 Year limited warranty of materials and workmanship.

BP Solar / Ameresco

This Ameresco branded panel is the direct descendant of BP Solar's SX range and is based on one of their best established product ranges used worldwide in thousands upon thousands of sites in single and multiple use. The multi-crystaline cells are designed to efficiently charge 12v batteries in virtually any climate for low power DC loads.

They provide a cost effective solution for maintaining the charge in batteries at off grid locations for low power telemetry, telecommunications, signals, navigation aids, security sensors, instrumentation and are also ideal for trickle charging leisure batteries on motorhomes and holiday cottages.

The Ameresco 420J solar panel benefits from (the old BP Solar) standard durable frames and tempered glass and is offered with a 12 year power performance warranty and 2 year materials and workmanship warranty.

Solar panels of the same power rating can be connected together efficiently for 24v use or parrallel connected for increased power. All these units are supplied with a universal frame.

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