Lower price range
Mighty Max ML35-12 12V 35Ah U1 Deep Cycle AGM Battery
Best for: Powering a fish finder, aerator, or small kayak setup on a budget.
$50-150
Universal Power Group · Marine Batteries
Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery
Long-standing and widely stocked. The main tradeoff is heavy at more than 60 lb.
Good fitA dependable all-purpose AGM for trolling motors, solar, and marine accessories.
Think twiceHeavy at more than 60 lb
$150-300 · check the retailer for current price and availability
1 supporting source · record reviewed July 26, 2026Decision notes
What it does well and what to watch for.
Start with how you plan to use it, then weigh these strengths and tradeoffs against your own setup.
Why it works
- Long-standing and widely stocked
- Vibration and shock resistant
- UL-recognized cells
Watch for
- Heavy at more than 60 lb
- Button terminals may need adapters for some trolling motor leads
Key details
Specifications at a glance.
- Price band
- $150-300
- Authority Score
- 8.0 / 10
- Chemistry
- AGM VRLA lead-acid
- Capacity
- 100Ah
- Group size
- 27
- Terminals
- Threaded button
- Weight
- About 63 lb
Sources and checks
Sources for Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery.
Record reviewed . Retailers confirm the exact seller, configuration, price, and availability.
These sources support the model identity and buying notes on this page. Shopping links are never treated as evidence.
Other budgets
Spend less, stay close, or step up.
Closest price range
WEIZE 12V 100Ah Deep Cycle AGM Battery, Group 31
Best for: Budget-conscious trolling motor or house power use where weight is not critical.
$150-300
Higher price range
ExpertPower 12V 100Ah LiFePO4 Deep Cycle Battery with Bluetooth
Best for: Boaters who want app-based battery monitoring in a mid-priced lithium.
$300-600
Complete the setup
Build the rest of the setup.
Small-boat fishing. Start with the pieces your day actually requires. These picks sit near the middle of each category's researched price range.
Trolling Motors
MotorGuide Xi3 Wireless Freshwater 55lb 48-inch with Pinpoint GPS
Why it belongs: Controls boat speed and position around wind, current, and structure.
Best for: Freshwater boaters who need a 48 inch shaft and want wireless Pinpoint GPS positioning from a single 12 volt battery.
$600-1000
Fish Finders
Garmin ECHOMAP UHD2 74sv
Why it belongs: Adds depth, structure, mapping, and sonar context to the water being covered.
Best for: The serious walleye or bass angler building toward live sonar who wants Garmin mapping now.
$600-1000
Tackle Boxes & Bags
KastKing BaitSpace 50L Fishing Tackle Backpack
Why it belongs: Keeps active presentations organized without taking over limited deck space.
Best for: Anglers who hike or shore-fish and need to carry a large, self-contained tackle load hands-free.
$50-150
Before you order
A few final checks.
Make sure the model fits your setup. Then use the retailer listing to confirm what is included, who is selling it, and how returns work.
Ready to check the listing?
$150-300Check price at AmazonOpens Amazon in a new tab. Price and availability can change.Does the Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery fit a first-time buyer or a specialist?
The intended Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery fit is clear: A dependable all-purpose AGM for trolling motors, solar, and marine accessories. Check its measurements and category-specific specifications against your own equipment and conditions before ordering.
What could rule the Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery out?
What the Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery does well: Long-standing and widely stocked. What to watch: Heavy at more than 60 lb. That tradeoff matters more than a small price difference between otherwise similar options.
Which fit checks matter most for the Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery?
Fit for the Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery starts with chemistry (AGM VRLA lead-acid), capacity (100Ah), and group size (27). If any detail differs from your needs, choose a different configuration or compare another model before ordering.
Can I buy the Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery from this page?
Open the retailer action beside the Universal Power Group UB121000 12V 100Ah AGM SLA Deep Cycle Battery to check the live price and stock. The retailer is also the final source for seller, shipping, returns, and the exact option selected.