Understanding SLA Battery Types and Terminals
- by Joe Weber - updated on 8/22/2025
Sealed Lead-Acid (SLA) batteries are a popular choice for reliable, low-maintenance power in numerous applications. You'll find them in everything from wheelchairs and scooters to medical devices, security systems, generators, UPS backups, emergency lighting, even kids' ride-on toys, and so much more.
In this blog, we'll break down the different types of SLA batteries and their common uses. We'll also walk through the most common SLA battery terminal types and how to identify which one you need.
Types of SLA Batteries & Common Uses
Choosing the right SLA battery begins with understanding the primary types — General Purpose, Deep Cycle, GEL, and High-Rate — and determining where each type works best.
General Purpose SLA
Versatile option. Great for sump pumps, fire, security & alarms, UPS systems, and kids' ride-on toys. Provides short bursts of power but isn't built for continual deep discharges.
Deep Cycle SLA
Perfect for mobility scooters, wheelchairs, and floor scrubbers. Handles repeated deep discharges and recharges.
Gel SLA
GEL batteries use a thickened electrolyte made with silica gel, which allows for deep cycling and exceptional resistance to vibration and extreme temperatures. Ideal for marine use, power chairs, and off-grid solar systems.
High-Rate SLA
Delivers quick energy for backup power needs in data centers, servers, and emergency lights.
SLA Battery Terminal Types
Understanding the terminal type is just as important as choosing the right battery. Here's what you should know before you buy.
F1 & F2 Faston Tabs
Flat blades for push-on connectors are common in alarm panels, emergency lights, and many smaller applications. Easy to connect with no tools.
Nut & Bolt (NB)
Square terminal with bolt and nut for a tight, vibration-resistant connection. Good for mobility and powersport uses. Nut & Bolt terminals come in several sizes.
Threaded Insert
Recessed hole with threads (typically M5, M6, or M8) for a secure bolt-on fit; common in UPS and telecom batteries.
P Terminals
Generally seen on batteries with a higher amp-hour (Ah) rating, these terminals are thicker to handle more power.
J Terminals
Common on batteries with a solid mid-range in amp-hour rating (generally around 30-35 Ah). They are nut and bolt style but are thicker to handle more power.
Dual Terminals
A combination post and stud allows you to connect multiple cables, which is common in RV or marine battery applications.
Wire Leads
Attached wires and connectors provide plug-and-play functionality, a feature commonly seen in children's riding toys.
Get the Right Battery with Confidence
Finding the right SLA battery means matching the voltage, capacity, and terminal type to your equipment. Batteries Plus makes it easy — bring in your old battery and we'll help you find a perfect match. Many stores even offer battery installation.
Stop By Today
When it comes to sealed lead acid batteries, don't guess — get it right the first time. Visit your local Batteries Plus for trusted brands like Duracell Ultra, Contender, Power Sonic, and more, plus expert advice to help you choose the perfect match. Bring your old battery in for testing or recycling, and ask about professional installation options that may be available at your store.
Our experts are here to help you power your equipment with confidence. Stop into your nearest Batteries Plus today and let our team help you stay powered up and ready for whatever comes next!
Frequently Asked Questions
Q: Can I use a different terminal type than my original battery?
A: You should always match your original terminal type for safety and proper fit. If you get a battery with different terminals, your connectors may not fit properly, which can lead to loose connections, poor performance, or even damage to your equipment. Terminal adapters are available to convert between F1, F2, and NB when a matching terminal connection is not possible.
Q: How do I know which SLA battery I need?
A: Check your device's manual or bring your old battery to Batteries Plus for a match.
Q: Does Batteries Plus install SLA batteries?
A: Many of our locations offer battery installation services for many applications. Check with your local store to see what devices they can install batteries in!
Q: What brands of SLA batteries does Batteries Plus carry?
A: We offer trusted brands like Duracell Ultra, Contender Fire & Security, and Power Sonic.
Q: Can Batteries Plus help me recycle my old SLA battery?
A: Yes! All of our stores accept used batteries for safe recycling.