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Firman Model: WH03042 12V 5Ah Generator Battery - This Is an AJC Brand Replacement
Key item features
INFORMATION
- AJC® Replacement Battery
- Voltage: 12V (12 Volts)
- Capacity: 5Ah
- Terminals: F1
- Chemistry: Sealed Lead Acid (AGM)
- Length 3.54 in
- Width 2.76 in
- Height 3.98 in
- Weight: 3.6 lbs
Disclaimer: Our products are not affiliated with or authorized by Firman
BENEFITS OF AJC® REPLACEMENT BATTERIES
- High quality, low cost replacement batteries for thousands of devices.
- AJC batteries are exact OEM replacements guaranteed to fit easily and precisely.
- Millions of batteries sold globally.
- UL recognized component.
- Buy with confidence. AJC batteries are backed by easy 30-day returns and a 12-month warranty.
SLA BATTERY CARE
- Recharge batteries after each use to prevent performance decline.
- Avoid complete discharges.
- Periodically check terminals for signs of corrosion or other wear which might cause failure.
- Always store battery fully charged.
- Store battery in cool, dry place (68°F/20°C).
- Recycle batteries, do not dispose.
Specs
- RechargeableY
- Volts12
- Battery capacity5 Ah
- BrandAJC
- Height3.98 in
- Weight3.6 lb
Current price is USD$27.99
Price when purchased online
- Free shipping
Free 30-day returns
How do you want your item?
Columbus, 43215
Arrives by Thu, Feb 12
|Sold and shipped by BuyClerk|Pro Seller
4.236574746008708 stars out of 5, based on 689 seller reviews(4.2)689 seller reviews
Free 30-day returns
About this item
Product details
AJC® replacement compatible with Firman Model: WH03042 12V 5Ah Generator Battery. Exact OEM replacement guaranteed to fit easily and precisely. Maintenance free AGM technology, no need to add acid or water ever. IMPORTANT: You MUST RE-USE: your existing cabling and hardware. These are replacement batteries only. NOTE: It is your responsibility to verify the batteries being ordered match the batteries in your unit prior to placing your order. We are not responsible for incorrect orders.
INFORMATION
- AJC® Replacement Battery
- Voltage: 12V (12 Volts)
- Capacity: 5Ah
- Terminals: F1
- Chemistry: Sealed Lead Acid (AGM)
- Length 3.54 in
- Width 2.76 in
- Height 3.98 in
- Weight: 3.6 lbs
Disclaimer: Our products are not affiliated with or authorized by Firman
BENEFITS OF AJC® REPLACEMENT BATTERIES
- High quality, low cost replacement batteries for thousands of devices.
- AJC batteries are exact OEM replacements guaranteed to fit easily and precisely.
- Millions of batteries sold globally.
- UL recognized component.
- Buy with confidence. AJC batteries are backed by easy 30-day returns and a 12-month warranty.
SLA BATTERY CARE
- Recharge batteries after each use to prevent performance decline.
- Avoid complete discharges.
- Periodically check terminals for signs of corrosion or other wear which might cause failure.
- Always store battery fully charged.
- Store battery in cool, dry place (68°F/20°C).
- Recycle batteries, do not dispose.
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.
Specifications
Rechargeable
Y
Volts
12
Battery capacity
5 Ah
Brand
AJC
Warranty
Warranty information
Backed by easy 30-day returns and 12-month warranty
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warnings
Ingestion Hazard
This product contains a battery. Death or serious injury can occur if ingested. A swallowed battery can cause Internal Chemical Burn in as little as 2 hours. Keep new and used batteries OUT OF REACH OF CHILDREN. Seek Immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
Compare with similar items
| Product | Viewing this itemFirman Model: WH03042 12V 5Ah Generator Battery - This Is an AJC Brand Replacement ![]() $27.99 current price $27.9913 out of 5 Stars. 1 reviews | Liftmaster 475LM 12V 5Ah Garage Door Battery - This Is an AJC Brand Replacement ![]() $27.99 current price $27.9925 out of 5 Stars. 2 reviews | Duracell PowerBoost AA Batteries, 4 pack, Long-lasting Alkaline Power ![]() $4.97 current price $4.9712544.7 out of 5 Stars. 1254 reviews |
|---|
| Rechargeable | YFirman Model: WH03042 12V 5Ah Generator Battery - This Is an AJC Brand Replacement | YLiftmaster 475LM 12V 5Ah Garage Door Battery - This Is an AJC Brand Replacement | NDuracell PowerBoost AA Batteries, 4 pack, Long-lasting Alkaline Power |
|---|---|---|---|
| Volts | 12Firman Model: WH03042 12V 5Ah Generator Battery - This Is an AJC Brand Replacement | 12 VLiftmaster 475LM 12V 5Ah Garage Door Battery - This Is an AJC Brand Replacement | 1.5 VDuracell PowerBoost AA Batteries, 4 pack, Long-lasting Alkaline Power |
| Battery capacity | 5 AhFirman Model: WH03042 12V 5Ah Generator Battery - This Is an AJC Brand Replacement | 5 AhLiftmaster 475LM 12V 5Ah Garage Door Battery - This Is an AJC Brand Replacement | -Duracell PowerBoost AA Batteries, 4 pack, Long-lasting Alkaline Power |
| Height | 3.98 inFirman Model: WH03042 12V 5Ah Generator Battery - This Is an AJC Brand Replacement | 3.98 inLiftmaster 475LM 12V 5Ah Garage Door Battery - This Is an AJC Brand Replacement | 4.74"Duracell PowerBoost AA Batteries, 4 pack, Long-lasting Alkaline Power |
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Showing 1-1 of 1 review
Jan 20, 2026
James
3 out of 5 stars review
Verified Purchase
Works but not the right terminals for the Firman
so, this site contends that the part is "exact replacement" but the connectors are push on and not the bolt on style that the Firman Generator model WH03042 uses. I got it to work but it's definitely not "exact replacement"
Helpful?1Q7BN2RVQLK11739476390



