Chibi-Robo Hints

Your battery is upgraded at the following Chibi rank:

100 Battery: Rank 100,000
120 Battery: Rank 10,000
140 Battery: Rank 1,000
160 Battery: Rank 100
180 Battery: Rank 10
200 Battery: Rank 9
230 Battery: Rank 8
260 Battery: Rank 7
290 Battery: Rank 6
320 Battery: Rank 5
360 Battery: Rank 4
420 Battery: Rank 3
500 Battery: Rank 2
Unlimited Battery: Rank 1
How you like it.

Hint: Giga Charger
The Giga Charger is in the basement. Use chibi-vision to look up at the ceiling keep looking until you spot it. Once you do, shoot down the wooden board nearby and follow that path. Once you obtain it, Captian Plankbeard will tell you about the Giga Robos leg.
Hint: Frog Forking
Have you been curious about those weird looking rings that have a frog's head on them? Well, collect them! If you give each one to Jenny (ten in all) she'll take that stupid frog hat off.