2011 Nissan frontier battery will not hold charge over night

see if your 2011 nissan frontier
owners manual is listed on this link

Owner Portal

MAYBE FUSE BLOWN, TAKE IT TO NISSAN DEALER ASK FOR HELP.

AutoZone has them. autozone.com

Starter need replace

Depending on the sub-model, 2005 - 2012 versions *can* fit. Look for yours in the list below:

• Fit note: Crew Cab Pickup, Extended Cab Pickup

This product fits the following Nissan Frontier submodels

• 2013-2013: Desert Runner; 6 Cyl 4.0L;
• 2011-2013: S; 4 Cyl 2.5L;
• 2011-2013: SL; 6 Cyl 4.0L;
• 2011-2013: SV; 4 Cyl 2.5L;
• 2011-2013: SV; 6 Cyl 4.0L;
• 2009-2013: PRO-4X; 6 Cyl 4.0L;
• 2011-2012: S; 6 Cyl 4.0L;
• 2008-2010: SE; 4 Cyl 2.5L;
• 2005-2010: LE; 6 Cyl 4.0L;
• 2005-2010: SE; 6 Cyl 4.0L;
• 2005-2010: XE; 4 Cyl 2.5L;
• 2005-2008: Nismo Off-Road; 6 Cyl 4.0L;

When calling to inquire or order - tell them the year, make, model (S, SL, SV, LE, SE, XE, etc.) Cab type (crew, extended, etc.) before paying. Have a look at the link below.

2005 2012 Nissan Frontier Tail Light Replacement Driver Side...

Have the battery load tested to determine it's ability to take & hold a charge. It could have a bad cell that will drain the good cells. Your local auto parts will test the battery free of charge.
I hope this helps.

we must make sure the battery have enough cca.cold cranking amps for that truck. 20 days will slowly drain that battery. check and Charge the battery

Check the alternator and battery clemmas/wires coming from alternator. It looks like no charge from it coming to battery. If it is second battery already this is the sign. You can do it free of charge at autozone store. But any way as a temporary solution you can buy battery charger ($25 walmart) and charge the battery back if battery is damaged you will see it right away (it wont be charging). After you charge battery back start the engine run it for 30 minutes (if Alternator OK it is enough to charge battery back), stop and start again. If no start alternator is a problem.
Good Luck

waste of time doing that
alternators need to put out 14.5-14.8 volts dc to work properly
could be the alternator , voltage regulator or drive belt adjustment
best if you take it to an accredited auto electrician for a charge circuit system test