thorough Cylce Batteries
There are many intricacies to trouble free rv’ing but it is our thorough cycle batteries that lie at the at the heart of “rv maintenance” confusion…and only for one reason.
We think we understand our thorough cycle batteries when the fact of the matter is..we don’t!!!
The confusion is easily understood however if you just stop and think about it. The bulk of our experience with rule acid batteries is with our automobiles SLI (starting, lights, ignition) battery. Our thorough cycle battery is a rule acid battery also and looks just like our automobiles starting battery, but the similarities end there. The batteries are not only very different internally but most of the rv’ers problems with thorough cycle batteries revolve around how often they are used and how they are maintained. Generally our automobiles are used on a more routine basis and are charged with a very adequate charging system. Such is not always the case with rv’s.
occasional use coupled with inadequate charging systems leads to problems, problems which can be conquer…only however if they are recognized and understood. This is where an understanding of thorough cycle batteries will pay dividends both in battery efficiency and reliability.
The following statements and replies should help clarify some shared fallacies about the use and maintenance of thorough cycle batteries.
#1. The rule acid battery is one of the greatest inventions of the 29th century.
False! Believe it or not the rule acid battery goes back 147 years to 1859.
#2. A RV/Marine battery is a true thorough cycle battery.
False! A RV/Marine is a cross between a true thorough cycle battery and an automobile battery and is not a true thorough cycle battery.
#3. thorough Cycle batteries are fine as long as they read 12 volts.
False! thorough Cycle battery reading 12 volts is 75% discharged and is experiencing sulfation which accounts for 80% of battery failures.
#4. Is it OK to take a voltage reading closest after charging?
False! Surface charge should always be removed prior to taking a voltage reading.
#5. The best time to take a voltage reading is during charging.
False! Voltage readings taken while charging are not accurate.
#6. The correct time to take a voltage reading on thorough cycle battery is 12 hours after charging.
True! Waiting 12 hours after charging to take a voltage reading is the “correct” way to check a battery.
#7. Its OK to let thorough cycle batteries sit between uses.
False! thorough cycle batteries are chemically “alive”. They should be either charging or discharging. If not…. they are dying!!!
8# Charging a thorough cycle battery at l4 volts will ruin it.
False! A thorough cycle battery must reach l4 volts in the bulk charging stage or it will not reach 100% charge.
#9. Its OK to have thorough cycle batteries on a “maintenance charge” between uses.
True ! See answer #7. Inactivity is the reason for thorough cycle battery failure, inefficiencies, and poor capacity. thorough cycle battery owners who do not understand this will experience premature loss of capacity and and battery failure.
#10. There isn’t much difference between battery chargers.