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.

Brand	Renogy
Material	Monocrystalline Silicon
Product Dimensions	116.6L x 56.9W x 2H Centimeters
Item Weight	4.4 Pounds
Efficiency	High Efficiency
Included Components	Solar Cables/Connectors
Maximum Voltage	21 Volts
Maximum Power	100 Watts
Special Feature	High-efficiency Gen II back contact cells, lightweight and flexible design, resistance to power loss via cracking and corrosion
Global Trade Identification Number	00816360025917
Manufacturer	Renogy
Country of Origin	USA
Item model number	SPR-OS-FLEX-100
ASIN	B077H45H3F

Renogy High Efficiency Flexible Monocrystalline Solar Panel, 100W, IP67 Connector, SPR-OS-FLEX-100

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