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Everything you always wanted to know about Batteries.
Not a real big selection on batteries out there for the
Poor Man. Sam's Club has 6 volt flooded golf cart batteries at a price hard to beat. For racing you need Sealed AGM (Absorbed
Glass Mat) batteries. The Orbital Blue seems to be the best value for the most amps at this time. I am also messing around
with a new battery called the Horizon 12D2000. As of 10/06, these are the batteries I am racing with. They handle the 2000
amp launches with ease.
| Exide Orbitals 34XCD Batteries in 48V layout |
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| These are very good and tough AGM batteries, but I wanted something bigger |
| Current 72V Battery Layout with Horizon 12D2000 's |
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| There will be more eventually. The PoorMan Must be patient. |
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| Horizon 12D2000 Batteries |
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| The Horizon 12D2000's are supposed to handle 1800 amps for one minute |
Charging the AGM's can be tricky, try not to let the voltage
go over 15 volts when amperage is high.
Exide Orbital Battery Technical Information
Charging
Recommendations
1. Constant Voltage Recharge: Appropriate for infrequent cycling use
o Voltage set-point: 14.6 volts
(A)
o Current limit: 20% of nominal capacity (15 amps for most Orbital sizes)
o Recharge time: 8-18 hours or when current
reaches < 2% of capacity (1.5 amps)
2. IUI or Constant Voltage/Constant Current/Constant Voltage Recharge: Appropriate
for more continuous
cyclic discharge/recharge applications
o Step 1: Maximum current limit of 20% of nominal capacity
(approx: 15 amps)
and voltage limit of 14.4 volts (A)
o Step 2: Hold at 14.4 volts until recharge current reaches 2%
of nominal capacity
(1.5 amps for most Orbital sizes)
o Step 3: Hold current at 2% of nominal capacity (1.5 amps) for
2 hours
o Discontinue charge if battery reaches 50ºC (122ºF)
3. Float Charging: Appropriate for back-up power and UPS
applications
o Current limit: 20% of nominal capacity (15 amps for most Orbital sizes)
o Voltage set point: 13.8 volts
(2.30 volts per cell)
4. Fast Charging: Appropriate for emergency boosting only
o Maximum Current limit: 30 amps
o
Maximum time: 1 hour
o Limitation: Not recommended for deeply discharged batteries. Use recommendation #1 (Constant
Voltage
Recharge)
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