How do I reset the battery on RCL 3000 Lantern

It looks like it is around 23 years old. Made in China. See if you can send it back for repair :>D

The most likely cause is something not connected during the battery change over. It worked on the battery power when it was installed, but when it ran out, the charging circuit has a break somewhere and is not recharging. Also check the charger for Output Voltage. It is a 12 volt charger

https://fccid.io/NW9-RCL3000R/Test-Report/3000-25688

https://www.google.com/search?q=RCL+3000+remote+control+Lantern

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the Off, 1, or 11 position according to this very bad copy of the manual

https://usermanual.wiki/Sky-City/RCL3000R.manual-2

yes and no

The battery is held in with 2 lugs push them in and remove battery thks

Eiko 15501 F4T5 Straight T5 Day Light Fluorescent Tube Light Bulb 2 Pack...

Check its battery. It might be weak. Replace it and check.

Since batteries and bulbs are new/ok, check for a bad connection. In older version using 4 lantern batteries, open the battery compartment by unscrewing the knob on top of lantern. The lantern bottom comes off once unscrewed (of course you did this to change batteries). There is a "C" clip on the lantern center shaft; remove this by prying with screwdriver or with pliers. Carefully raise the battery contact plate and check slip-on wire connections. Clean as needed (Scotch-Brite works well) and reconnect. Squirt some contact cleaner in exposed switches, work switches back and forth. Inspect circuit board for obvious corrosion or damaged parts (this damage may "total" the lantern). Re-install plate aligning grooves with ribs. Install batteries and test.

There are several options to buy replacement batteries for a Coleman rechargeable lantern, model 5348-700. I just picked up two new batteries from www.1000bulbs.com for $4.87 each plus shipping. ($20.99 for 2 with shipping!) Do a Google search for: ub645f1 6 volt - 4.5 ah - f1 terminal battery for other options

I just searched the web and found that this website sells them for $16.99.
http://www.dutchovencookbooks.com/products/lanterns/remote.html