You may have 1 or more bad batteries, 35.8 is about a 35% charge.
Check the battery connections, water level and recharge.
Let the charger finish it's cycle, it could take up to 16 hours before it shuts off.
Your batteries need to be 38.2v at full charge.
How old are your batteries? Are they the original 2005's?
Post up the pack voltage and the individual numbers after charging and resting for at least 1 hour.