Please what is best controller charger & cables to buy- to hook this 100w solar panel into my 1100 watt Krieger inverter & marine deep cycle battery?

There are many brands on the market but we've had a lot of positive feedback on the Victron Energy SmartSolar MPPT charge controllers. They have Bluetooth built-in so from an app on your smartphone/tablet you can monitor the system in detail. With 1x100W panel you could go with the 75/10. If you're thinking of adding more panels you should size a bigger controller. Your panel(s) are going to connect to your MPPT charge controller. Then your controller will connect to your battery bank (via a breaker). This is all DC. Your inverter is separate to the solar and connects to the battery bank to invert DC to AC (probably 110V) In terms of wire size each panel has 17" of 12AWG wire with MC4 connectors built in. Depending on the distance of the wire run you could stay with 12AWG or may have to go to 10AWG for longer distances.

What is the maximum number of these that can be put in parallel?

I believe the maximum number is four. I put three of them in parallel with no problems. Your wires have to be heavy enough to handle the current, and the charge controller must be rated appropriately.

what is the effiency of the panel?

The seller claims they are 23%-25% efficient. There is no way that's true. The most expensive commercial panels are still under 23% efficiency.

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Renogy SunPower Flexible 100 Watt Monocrystalline Solar Panel

Renogy SunPower Flexible 100 Watt Monocrystalline Solar Panel

Product ID: 567865837

Details

Brand
Renogy
Efficiency
High
Included components
Solar
Item weight
2 kg
Material
Silicon

⚡100W max power output

🔄Flexible up to 30°

🪶Lightweight 2kg design

€ 462.31

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Description

☀️ Power your lifestyle with flexible solar freedom!

ULTIMATE PORTABILITY - Top-grade polymer materials ensure easy transport and installation wherever your next adventure takes you.
POWERHOUSE PERFORMANCE - Harness 100 watts of clean, efficient energy with SunPower’s Gen II back contact cells.
PLUG PLAY CONVENIENCE - Standard MC4 quick-connect cables and adhesive or grommet mounting options make setup effortless.
FEATHERLIGHT FLEXIBILITY - Weighing just 2kg, this panel bends up to 30° for seamless installation on curved surfaces.
DURABILITY MEETS INNOVATION - Built on a solid copper foundation, resistant to cracking and corrosion for long-lasting reliability.

The Renogy SunPower Flexible 100 Watt Monocrystalline Solar Panel combines cutting-edge Gen II back contact cells with a lightweight, flexible design that bends up to 30 degrees. Engineered with a solid copper foundation, it resists cracking and corrosion, delivering superior power output and durability. Featuring quick-connect MC4 cables and versatile mounting options, this 2kg panel is perfect for professionals seeking efficient, portable solar solutions.

Specifications

ASIN	B077H45H3F
ASIN	B077H45H3F
Brand Name	Renogy
Connector Type	MC4
Customer Reviews	4.2 4.2 out of 5 stars (49)
Customer reviews	4.2 4.2 out of 5 stars (49)
Date First Available	7 June 2019
Efficiency	High Efficiency
Global Trade Identification Number	00816360025917
Included Components	Solar Cables/Connectors
Is Discontinued By Manufacturer	No
Item Type Name	solar panel
Item Weight	2 kg
Item model number	SPR-OS-FLEX-100
Manufacturer	SunPower
Manufacturer	SunPower
Manufacturer Part Number	SPR-OS-FLEX-100
Material Type	Monocrystalline Silicon
Maximum Power	100 Watts
Model Number	SPR-OS-FLEX-100
Number of Items	1
Number of Packs	1
Product Dimensions	116.59 x 56.9 x 2.03 cm; 2 kg
Unit Count	1 Count

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€ 462.31

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ireland.

Secure transaction

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Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

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