Sun Xtender PVX-420T

2 reviews
  • The SunXtender PVX-420T boasts industry leading life cycles providing safe, reliable and long lasting power.
  • Recombinant gas SunXtender Deep Cycle AGM Series solar batteries are low resistance, valve regulated lead acid (VRLA) batteries.
  • Non-Spillable maintenance free construction allows battery to be used upright, on it's end or side.
  • Features PolyGuard™ Microporous Polyethylene Separators shielding the positive plates against shorting, shock or vibration.
  • There is no exposed lead on SunXtender batteries and they are 100 percent recyclable making them environmentally friendly.
  • Designed for photovoltaic applications for superior & reliable solar power.
  • Low Self Discharge Rate Approximately 1 % per month at 25° C (77° F).
  • Ships UL approved, HAZMAT Exempt, DOT HMR40 compliant and fully charged ready to install.

Download Sun Xtender PVX-420T Datasheet PDF.

Click here to download Technical Manual PDF.

All SunXtender batteries are proudly made in the USA.
*Example payments are based on the listed product price(s) assuming a 24-month loan term and 9.99% APR. Subject to approval of credit application. Rates range from 5.99% to 29.99% APR, resulting in, for example, 24 monthly payments of $46.14 at 9.99% APR, per $1,000 borrowed. APRs will vary depending on credit qualifications, loan amount, and term. Bread® pay-over-time plans are loans made by Comenity Capital Bank.


BCI Group Reference

U1 Tall

Length in. (mm)

7.71" (196mm)

Width in. (mm)

5.18" (132mm)

Height in. (mm)

8.05" (204mm)

Weight lbs (kg)

30 lbs (13.6 kg)

Standard Terminal


Nominal Capacity Ampere Hours @ 77°F (25°C)
(To 1.75 volts per cell)
1 hr Rate

26 Ah

2 hr Rate

33 Ah

4 hr Rate

34 Ah

8 hr Rate

36 Ah

24 hr Rate

42 Ah

All SunXtender batteries are covered by an 1 Year Free Replacement  (no pro-rate)


A battery warranty is for manufacture defects in material and/or workmanship. Warranty does not apply to batteries that are severely discharged, have broken containers, covers, or terminals, have been overcharged or sulphated, or have been neglected or abused or are used in applications for which the battery is not designed.

The warranty covers the defective battery only. is not responsible for any freight charges, installation charges, loss of time, or other consequential damage or cost incurred.

The warranty does not apply to batteries if their proprietary manufacturing code markings and/or serial numbers have been tampered with or removed.

If you feel you have a received a defective battery, please email us at for instructions on how to proceed.

Customer Reviews
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Filter Reviews:
Doug M.
United States United States
I recommend this product

Poor customer service.

I haven’t been able to use the battery, because it doesn’t come with automotive terminals, and when I emailed “the battery guys” to ask about terminal adapters-for the second time- they didn’t bother to respond. This after I bought a battery from them. Thanks for nothin’, fellas. I will never buy from them again, that’s for sure.


Battery Guys

We have sent emails to our customers over the last couple weeks apologizing for delayed responses. Our entire staff came down with Covid and we had to quarantine for 2 weeks. The battery does not come with auto post, nor does it say it comes with auto post on our site. However, we have since contacted you and refunded you for some auto post adapters that you found on Amazon. So, I would say we went above and beyond on this transaction.

United States
I recommend this product

Sun Xtender PVX-420T AGM Batteries

Just arrived Palau today, packaging was perfect it held up well for the excessive and rough handling associated with ocean freight. Will install over the weekend and provide update on performance then.

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