Product Description

The Renogy Deep Cycle AGM Battery 12V 200Ah 4-Pack builds an 800Ah, 12V bank — 9.6kWh nominal — from four sealed absorbed glass mat (AGM) batteries. This is the full parallel bank Renogy documents for these batteries: four matched 200Ah monoblocks, sealed and low-maintenance per Renogy, with discharge rated down to -4°F and no battery electronics to manage.

Who This Is For

An 800Ah lead-acid bank is serious standby and off-grid capacity: cabins and homesteads, backup power for well pumps and refrigeration, large RV or marine house banks, and telecom or equipment sheds where batteries float for months and must simply work when called on. AGM's tolerance for float duty and its sub-3%-per-month self-discharge (per Renogy) fit that pattern well. The same four batteries can also be wired in series-parallel for 24V or 48V systems.

Key Features

  • 800Ah of combined capacity from four 12V 200Ah AGM batteries (rated at the 20-hour rate to 10.5V, per Renogy)
  • Sealed, low-maintenance design, per Renogy — no watering or electrolyte checks
  • 500 cycles at 50% depth of discharge, per Renogy
  • Self-discharge below 3% per month at 77°F, per Renogy — suited to standby and seasonal use
  • 2,000A maximum discharge current (5 seconds) per battery for surge loads
  • Discharge rated from -4°F to 140°F — cold-weather output without heaters
  • Configurable as 12V parallel or series-parallel for 24V and 48V systems, per Renogy's connection guidance

Why Renogy

Renogy has supplied batteries and solar equipment to the US off-grid market for over a decade, and publishes the datasheets, manuals, and warranty terms behind its ratings. These AGM batteries carry a 2-year prorated material and workmanship warranty, and OffGrid Horizon is an authorized Renogy dealer, so your coverage is valid from day one. Charging a bank this size goes faster with a proper array — the Renogy 400W complete solar kit shows how Renogy packages panels and AGM storage together.

Specifications

SKU RNG-BATT-AGM12-200x4-US
Chemistry AGM lead-acid, sealed
Nominal voltage 12V
Rated capacity 200Ah per battery (20-hour rate to 10.5V); 800Ah total (4 in parallel)
Cycle life 500 cycles at 50% depth of discharge, per Renogy
Max charge current 60A per battery
Max discharge current 2,000A for 5 seconds, per battery
Charge voltage (cycle use) 14.4V to 14.8V
Float charge voltage 13.6V to 13.8V
Self-discharge Less than 3% per month at 77°F, per Renogy
Charge temperature range 32°F to 122°F
Discharge temperature range -4°F to 140°F
Case material ABS
Dimensions (per battery) 20.6 x 9.4 x 8.8 in
Weight 127.9 lb per battery; approx. 511.6 lb total
Connections Series supported; parallel up to 4 batteries, per Renogy
What's included 4 x 12V 200Ah AGM battery, each with 2 terminal bolts (M8 x 1.25 x 15 mm)
Warranty 2-year prorated material and workmanship warranty, per Renogy
Documentation Renogy AGM 200Ah datasheet (PDF) · User manual (PDF)

AGM or Lithium? An Honest Comparison

At this bank size the chemistry decision matters, so here it is plainly.

Where AGM makes sense: lower upfront cost per amp-hour; discharge rated to -4°F with no heating or BMS electronics; well suited to float and standby service; works with ordinary lead-acid charging equipment. For a bank that mostly waits for outages, AGM is a rational buy.

Where lithium makes sense: Renogy rates its CORE LiFePO4 batteries at 5,000 cycles at 80% depth of discharge versus 500 at 50% here — and this 511.6 lb AGM bank yields roughly 400Ah of planned usable capacity, while two 60.63 lb CORE 300Ah batteries yield a comparable usable figure at under a quarter of the weight. Lithium costs more upfront and needs heating to charge below freezing; over years of daily cycling, its cost per cycle is typically lower.

Daily deep cycling favors lithium; standby, cold-discharge, and budget-first systems favor AGM. Both are legitimate engineering choices.

Warranty & Support

Renogy covers these batteries with a 2-year prorated material and workmanship warranty (see Renogy's warranty terms). OffGrid Horizon is a family-owned authorized Renogy dealer — call (302) 496-3554 for sizing help, troubleshooting, or warranty support.

Shipping

This 4-pack weighs over 500 lb and ships within the US by LTL freight on a pallet. The carrier will call ahead to schedule a curbside delivery; a liftgate brings the pallet to ground level. Before signing the delivery receipt, count the packages and inspect for damage — note anything on the receipt or refuse the damaged piece so your claim options stay intact. Have a plan (and a helper or hand truck) for moving four 127.9 lb batteries from the curb.

Frequently Asked Questions

How much of the 800Ah is usable?

Renogy rates cycle life at 50% depth of discharge, so plan around roughly 400Ah usable to preserve battery life. Occasional deeper discharge is possible but shortens cycle life.

Can I run this as a 24V or 48V bank?

Yes. Series connection is supported per Renogy, so the four batteries can be arranged as 2S2P (24V, 400Ah) or 4S (48V, 200Ah). Use matched cables and follow the manual's wiring guidance.

Can I add more batteries later?

Not in parallel — Renogy's documented limit is 4, and this pack is at it. If you anticipate needing more storage, consider a higher-voltage arrangement or a lithium bank before you build.

What charge settings do these want?

An AGM profile: 14.4V to 14.8V cycle use, 13.6V to 13.8V float, per Renogy, with up to 60A charge current per battery (240A across the full bank).

Do they need venting or maintenance?

Renogy describes them as sealed and low-maintenance — no watering. Keep them upright, allow the clearances the manual calls for, and store fully charged with a top-up about every three months.

Will they deliver power in freezing weather?

Yes — discharge is rated from -4°F to 140°F. Charging is rated from 32°F to 122°F, so charge while the bank is above freezing.

Building an 800Ah bank and want a second opinion on the design? Call OffGrid Horizon at (302) 496-3554 — we are a family-owned authorized Renogy dealer, or browse our Renogy collection.

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