How to connect a battery in Series?

　　The positive terminal of the first battery is connected to the negative terminal of the second battery, the positive terminal of the second is connected to the negative of the third, etc. The voltage of the assembled battery is the sum of the battery voltages of the individual batteries. So the batteries are connected: + to - to + to - to + to -, etc. The capacity of the battery is unchanged.

　　How to connect a battery in Parallel?

　　The positive terminal of the first battery is connected to the positive terminal of the second battery, the positive terminal of the second is connected to the positive of the third, etc. and The negative terminal of the first battery is connected to the negative terminal of the second battery, the negative terminal of the second is connected to the negative of the third, etc. So the batteries are connected: + to + to + and - to - to -. In this configuration, the capacity is the sum of the capacities of the individual batteries and voltage is unchanged. For example, if you take 5 6V 10AH batteries and connect the batteries in series, you would end up with a battery array that is 30 Volts and 10AH. If you connect the batteries in parallel, you would end up with a battery array that is 6 Volts and 50AH. By the way, this is how ordinary auto batteries are made. 6 2volt cells are put in series to give 12v battery and the 6 cells are just enclosed in one case. Many ni-cad batteries are done the same way.

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　　Can I take a wheelchair, scooter or other equipment that is powered by a sealed AGM or Gel battery on a airplane or cruise ship?

　　Yes. There should be no problem, the battery is considered non-spillable, non-hazardous, since it is a absorbed glass mat design. These sealed lead acid valve regulated (VRLA) batteries are classified as "Battery, wet non-spillable, not subject to regulations" by DOT and IMO. By IATA they are classified as "Not restricted for air transport" and they are in compliance with IATA/ICAO special provision A67. For the gelled electrolyte batteries, they are classified as "Battery, wet, filled with acid, UN2794, Class 8". They can be legally shipped via air with special packaging etc.

　　How do I Jump Start my Battery using booster cables?

　　WARNING-BATTERIES PRODUCE EXPLOSIVE GASES. These instructions are designed to minimize the explosion hazard. Keep sparks, flames and cigarettes away from batteries at all times. Both batteries should be of the same voltage (6, 12, etc.).

　　SAFE BOOSTER CABLE OPERATION When jump starting, always wear proper eye protection and never lean over the battery. Do not jump start a damaged battery; inspect both batteries before connecting booster cables. Be sure vent caps are tight and level. Be sure that the vehicles are not touching and that both ignition switches are in the "OFF" position. Turn off all electrical equipment (radio, defroster, windshield wipers, lights, etc.)