Battery enclosure

1 . A battery enclosure, comprising:

a lower housing having two or more pockets for accepting batteries;

an upper housing configured to cooperate with the lower housing;

a first connector having two or more conductors coupleable to an electronic device; and

an electrical circuit configured such that when two or more batteries are inserted in the pockets all in the same orientation a potential is provided at the first connector approximately equal to the sum of the voltage of the batteries in series, the electrical circuit having an electrical component in series with the connector and a first battery to prevent the first battery from charging/discharging a second battery.

2 . The battery enclosure of claim 1 , wherein the electrical component comprises a diode.

3 . The battery enclosure of claim 1 , the electrical circuit further comprising a mechanical feature to prevent electrical contact from being made with a battery if the battery is installed in the wrong orientation.

4 . The battery enclosure of claim 3 , wherein the electrical circuit is configured to accept a battery having terminals on opposing ends.

5 . The battery enclosure of claim 1 , further comprising a gasket between the upper housing and the lower housing.

6 . The battery enclosure of claim 1 , further comprising a threaded fastener for coupling the lower housing to the upper housing.

7 . The battery enclosure of claim 1 , wherein a second connector couples a first battery in series with a second battery and couples a third battery in series with a fourth battery, the output of the first and the second batteries and the output third and the fourth batteries coupled to the first connector.

8 . The battery enclosure of claim 7 , wherein at least 50% of the height of a battery is below an upper surface of the lower housing before the upper housing is secured to the lower housing.

9 . The battery enclosure of claim 8 , wherein at least 60% of the height of a battery is below the upper surface of the lower housing before the upper housing is secured to the lower housing.

10 . The battery enclosure of claim 1 , further comprising a retainer coupling the lower housing to the upper housing.

11 . The battery enclosure of claim 1 , wherein the lower housing has one or more contacts in mating alignment with one or more contacts in the upper housing to complete the electrical circuit.

12 . A battery enclosure, comprising:

a lower housing having two or more pockets for holding a battery in a first orientation; and

a connector having two or more conductors, the connector being coupled to a selected one of the upper housing and the lower housing, the conductors coupling pairs of batteries in series, the connector having a first conductor for coupling only current through a first battery and a second battery and a separate second conductor for coupling only current through a third and fourth battery.

13 . The battery enclosure of claim 12 , wherein the connector is part of an electrical circuit configured such that when two or more batteries are inserted in the pockets in the first orientation a potential is provided at the connector approximately equal to the sum of the voltage of the batteries in series.

14 . The battery enclosure of claim 12 , wherein the electrical circuit electrically couples additional batteries inserted in pairs to provide approximately the same output voltage.

15 . The battery enclosure of claim 12 , further comprising a mechanical feature to prevent electrical contact from being made with a battery if the battery is installed upside down.

16 . The battery enclosure of claim 12 , the electrical circuit further comprising a diode in series with the connector.

17 . The battery enclosure of claim 12 , further comprising a gasket for forming a water-tight seal between the upper housing and the lower housing.

18 . The battery enclosure of claim 12 , further comprising a threaded fastener for coupling the lower housing to the upper housing.

19 . The battery enclosure of claim 12 , further comprising a retainer coupling the lower housing to the upper housing.

20 . The battery enclosure of claim 12 , wherein at least 50% of the height of the battery is below the upper surface of the lower housing before the upper housing is secured to the lower housing.