Is maintenance required for deep cycle batteries?



The maintenance of deep cycle batteries is minimal, with the exception of lead-acid batteries. Lead-acid batteries must be topped off with distilled water on a monthly basis to keep their plates submerged. In the event the plates are not replaced, a new battery will need to be purchased. When you won’t be using lead-acid or AGM batteries for a long time, you can keep them charged with a trickle charger. Due to their battery management system, lithium batteries do not require it.

There are pros and cons to each type of deep cycle battery:

1. Lithium Pros & Cons:


  • The capacity is 80 to 100 percent of its usable capacity
  • Extremely high charging rates
  • Memory is not present in the battery
  • There is no need to maintain it
  • A compact and lightweight design
  • Between 2,000 and 5,000 charge cycles


  • Among deep cycle batteries, this option is the most expensive
  • Charges cannot be made at low temperatures
  • Maintaining batteries is necessary (usually internally)
  • Victron inverters and Battle Born lithium deep cycle batteries are installed in a Grand Design Solitude RV storage
  • Inverters from Victron and batteries from Battle Born

2. Lead-Acid Pros & Cons:


  • Sources that can be trusted
  • Being tolerant of overcharging
  • Capacity for high-current loads
  • World-wide accessibility
  • There is no expiration date on it


  • The usable capacity ranges from 30% to 50%
  • There is a great deal of weight
  • Monthly maintenance is required
  • Atmospheric gases are released
  • Charging efficiency of 70% to 85%

3. Gel Pros & Cons:


  • No spills are present
  • Maintenance is not necessary
  • Off-gassing is not an issue
  • Heat tolerance
  • Charge efficiency of 85% to 90%


  • Batteries with AGMs and lead-acids have a higher cost
  • It is not tolerated to fast charge
  • It can be ruined if overcharged
  • Profiles/setups have their own settings

4. AGM Pros & Cons:


  • A usable capacity of 60% to 80%
  • The rates are much higher than those of lead-acid or gel
  • Liquids do not spill
  • An off-gassing product
  • You don’t need to maintain
  • Charging efficiency of 95%
  • The cold doesn’t affect it


  • The cost of lead-acid batteries is higher
  • Deals can be ruined by high prices

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