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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
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Description
TECMATE 3807-0719 TM670-NA OptiMate PRO-4 DUO battery charger - - automatic/diagnosticFeatures Activate or prepare new batteries within one hour (60), including Pb (lead acid, dry charged AGM) with separate acid pack, factory activated Pb (AGM & GEL) and LFP lithium delivered in sleep mode and or requiring a top up charge Automatically save any type of deep discharged battery from as low as 0. 5 Volts, additionally for LFP lithium, manually reset the protective BMS and save from zero The automatic diagnostic charger for 4x 12V Pb lead
Features
- Activate or prepare new batteries within one hour (60’), including Pb (lead-acid, dry-charged AGM) with separate acid pack, factory activated Pb (AGM & GEL) and LFP lithium delivered in sleep mode and/or requiring a top up charge
- Automatically save any type of deep discharged battery from as low as 0.5 Volts, additionally for LFP lithium, manually reset the protective BMS and save from zero
- The automatic diagnostic charger for 4x 12V Pb lead-acid (STD, AGM, GEL) and/or 12.8V LFP lithium (LiFePO4 / Lithium Ferrous Phosphate) batteries
- Testing during charging to confirm if battery is safely recoverable, followed by a state of health (S.O.H.) test to confirm if battery is serviceable
- 4 fully independent 5 Amp charging stations/banks, each with 3 Selectable modes to service NEW and USED powersport batteries
- Each bank delivered with a replaceable output cord and fused battery clip set, AC power cord is replaceable/exchangeable
- State of health test for GOOD (80 - 100%), OK (60 - 80%) or BAD (below 60%) batteries
- 24-7 Optimate maintenance keeps battery at 100% until ready to be used
- Lithium: push-button battery management system (BMS) reset
Specs
| Style | Automatic |
| Units | Each |
| Riding Style | ATV |
| Riding Style | Off-Road |
| Riding Style | Watercraft |
| Product Name | Battery Charger |
| Riding Style | Snow |
| Riding Style | UTV |
| Style | Diagnostic |
| Color/Finish | Black |
| Type | OptiMate PRO-4 DUO |
| Riding Style | Adventure Touring / Dual-Sport |
| Riding Style | Street |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Heavy duty and has lasted three years so far
I have had this relay installed in the engine bay of my Lexus RX 300, functioning to link the front battery to the additional battery in the trunk whenever the ignition is on. The relay has worked reliably for about three years now with no complaints besides one minor comment, be careful when threading down the nut on the Low voltage side. It is prone to stripping
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Reviewed in the United States on March 24, 2025
★★★★★ 5
It delivers as advertised.
Works as advertised, and is easy to install.
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Reviewed in the United States on August 18, 2025
★★★★★ 5
Heavy Duty!!
Performed extremely well. No buzzzing or poor connection. Extremely well built and has been working issue free for over 6 months! Instalation can be a bit difficult due to size and weight. Not really a problem.
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Reviewed in the United States on November 25, 2024
★★★★★ 4
Seems to be ok for the money
We use it to power a 2000w inverter for the refrigerator and microwave on our boat where sometimes it will stay on continuously throughout the day and it hasn't let us down. As others have said, the terminals are awful close together but for the money, it's worth it.
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Reviewed in the United States on January 21, 2025
★★★★★ 5
Been doing great since 2020
Used this to replace the charging solenoid on my diesel motorhome. Originally used a White-Rodgers OEM relay and it only lasted about 18 months. This has been going strong since 2020 and I use my motorhome about 10 months out of the year with lots of miles.
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Reviewed in the United States on October 2, 2024