+-----------+--------------+-------+
           |           |              |       |
           |           >              >       |   Nominal
           |           <  24K   24.3K <     ----- 48 Volt
Diversion  >           > .25W   .25W  >      ---  Lead   
 Load      <           <  R3      R2  <     ----- Acid   
       RL  >           |    -----     |      ---  Storage
           <           |   | ZM  |    |     ----- Battery
           |           |   | 330 |    |      ---         
           |           |   | 64C |    |       |          
           |       +---+    -----     |      ---
           |  Zener|   | Out| | |Gnd  |       -
 ZM33064C  |  5.1V |C /+----+ |---    |          POWER
  Voltage  |     ----- |      | -     >           MOSFET
   Monitor |    / A^   |      +------><          -------
 --------- |      /|\  |   VCC In     > 1K      |       |
 |       | |D      |   |              < RD      --|-|-|--
  \| | |/  |--|   ---  |              >         --|-|-|--
   |-|-|   T1 | |- -   |              |           | | |
   | | | IRL  | |      |              |           G D S
   O I G 540N | |G     |              >           a r o
   u n n   |->| |------+         2.0K <           t a u
   t   d   |--| N Channel        .25W >           e i r
  Bottom   |S   Power MOSFET      R1  <             n c
   View    |    No Heat Sink          |               e
          ---   Required for         ---          Lead
           -    Up To 5 Amps          -            View