How long does an OPzS battery last in an off-grid installation?

20-25 years, provided distilled water is topped up every 1-3 years; it remains the most cost-effective long-term option for a family home.

What's the difference between OPzS and OPzV?

OPzS is flooded tubular (needs water top-ups); OPzV is its sealed gel version, maintenance-free, designed for unventilated technical rooms or telecom cabinets.

Is LiFePO4 lithium worth it over lead-acid for renewables?

A 48 V LiFePO4 rack takes up half the space, tolerates 100% depth of discharge without penalty, lasts 10-15 years and integrates natively with Victron, SMA or Fronius inverters.

How do I know how many kWh I need for my renewable bank?

Multiply your daily kWh consumption by the days of autonomy without generation you want to cover, adjusted for the maximum depth of discharge of your chosen technology (50% lead, 80% lithium).

Do these batteries also work for wind or mini-hydro, not just solar?

Yes. Small wind and mini-hydro systems use the same 200-800 Ah AGM or OPzV banks at 24/48 V as an equivalent off-grid solar installation.

Renewable Energy Batteries

The renewable-energy battery is the silent core of any distributed generation system that must run off-grid: solar PV off-grid, self-consumption with storage, small wind (rural, marine), mini-hydro and hybrid solar+wind+genset. Different from a car battery: here you need thousands of cycles at 50% DoD over 10-25 years.

Four technologies: OPzS (flooded tubular, 20-25 years), OPzV (sealed gel tubular, 18-22 years), deep cycle AGM (10-12 years, entry), LiFePO4 (4,000-6,000 cycles at 80% DoD).

There are 31 products.

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Showing 1-24 of 31 item(s)

TROJAN

Solar battery Trojan SAGM 06 220 6V 190Ah AGM

220Ah

AGM

262 × 179 × 273 mm

4,61(7)

€645.76 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SAGM 06 315 6V 279Ah AGM

315Ah

AGM

296 × 176 × 355 mm

4,87(9)

€891.33 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SAGM 06 375 6V 329Ah AGM

375Ah

AGM

296 × 176 × 414 mm

4,65(6)

€1,098.43 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SAGM 08 165 8V 145Ah AGM

165Ah

AGM

262 × 179 × 273 mm

4,43(6)

€638.89 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SAGM 12 105 12V 94Ah AGM

12V

105Ah

AGM

325 × 173 × 237 mm

4,80(5)

€661.08 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SAGM 12 135 12V 131Ah AGM

12V

135Ah

AGM

329 × 179 × 278 mm

5,00(5)

€742.03 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SAGM 12 205 12V 174Ah AGM

12V

205Ah

AGM

380 × 176 × 357 mm

4,92(7)

€1,185.39 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SIND 02 1990 2V 1393Ah

1547Ah

389 × 260 × 610 mm

4,69(10)

€1,637.43 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SIND 02 2450 2V 1712Ah

1882Ah

440 × 260 × 610 mm

4,81(8)

€1,935.09 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SIND 04 1685 4V 1149Ah

1293Ah

567 × 261 × 610 mm

4,77(7)

€2,542.22 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SIND 04 2145 4V 1474Ah

1647Ah

691 × 265 × 610 mm

4,60(7)

€3,127.61 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SIND 06 1225 6V 835Ah

942Ah

689 × 265 × 610 mm

4,62(7)

€2,731.54 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SIND 06 610 6V 421Ah

472Ah

389 × 260 × 610 mm

4,97(6)

€1,494.39 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SIND 06 920 6V 627Ah

708Ah

567 × 262 × 610 mm

4,68(10)

€2,139.90 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SPRE 02 1255 2V 1039Ah

1130Ah

296 × 176 × 446 mm

4,83(8)

€932.04 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SPRE 06 255 6V 211Ah

229Ah

262 × 181 × 298 mm

4,84(7)

€491.30 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SPRE 06 415 6V 346Ah

377Ah

296 × 176 × 446 mm

4,64(7)

€920.58 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SPRE 12 225 12V 179Ah

12V

204Ah

380 × 176 × 374 mm

4,83(6)

€940.63 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SSIG 06 235 6V 196Ah

214Ah

262 × 181 × 273 mm

4,92(7)

€362.20 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SSIG 06 255 6V 211Ah

229Ah

262 × 181 × 273 mm

4,81(27)

€400.66 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SSIG 06 290 6V 243Ah

265Ah

262 × 181 × 292 mm

4,73(19)

€548.74 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SSIG 06 375 6V 309Ah

336Ah

296 × 176 × 365 mm

4,75(9)

€734.60 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SSIG 06 405 6V 337Ah

366Ah

296 × 176 × 365 mm

4,42(6)

€814.46 VAT incl.

TO BUY

TROJAN

Solar battery Trojan SSIG 06 475 6V 393Ah

428Ah

296 × 176 × 446 mm

4,80(5)

€871.73 VAT incl.

TO BUY

Showing 1-24 of 31 item(s)

Sizing your renewable bank

Start with daily kWh and days of autonomy without generation. A family off-grid home: 8-15 kWh/day; with 3 days autonomy at 50% DoD lead, that's 48-90 kWh nominal — bank voltage matched to the inverter (24 V small, 48 V whole-house). LiFePO4 drops to 24-45 usable kWh at 80% DoD.

Table by renewable application

Application	Typical capacity	Voltage	Technology
Cabin / shelter off-grid	200-400 Ah	12 / 24 V	Deep cycle AGM / OPzV
Family off-grid home	800-1,500 Ah	48 V	OPzS / OPzV / LiFePO4
Self-consumption + storage	5-15 kWh usable	48 V	LiFePO4 (wall rack)
Small wind / mini-hydro	200-800 Ah	24 / 48 V	AGM / OPzV
Telecom / remote monitoring	100-400 Ah	48 V	OPzV long-cycle gel

OPzS vs OPzV vs AGM vs Lithium

OPzS remains the most cost-effective long-term option for family off-grid — 20-25 year life with distilled water top-up every 1-3 years. OPzV gel is the sealed version (zero maintenance) — for unventilated technical rooms or telecom cabinets. Deep cycle AGM is the affordable entry. LiFePO4 48 V rack is the new benchmark: half the footprint, 100% DoD without penalty, 10-15 year life, native integration with Victron, SMA, Fronius inverters.

Leading brands

How to compare before choosing your renewable bank

Use the comparator to see capacity (Ah/kWh), voltage, cycle life and dimensions of each model at a glance, and pick the combination that best fits your inverter and target autonomy.

Frequently asked questions about renewable-energy batteries

How long does an OPzS battery last in an off-grid installation?: 20-25 years, provided distilled water is topped up every 1-3 years; it remains the most cost-effective long-term option for a family home.
What's the difference between OPzS and OPzV?: OPzS is flooded tubular (needs water top-ups); OPzV is its sealed gel version, maintenance-free, designed for unventilated technical rooms or telecom cabinets.
Is LiFePO4 lithium worth it over lead-acid for renewables?: A 48 V LiFePO4 rack takes up half the space, tolerates 100% depth of discharge without penalty, lasts 10-15 years and integrates natively with Victron, SMA or Fronius inverters.
How do I know how many kWh I need for my renewable bank?: Multiply your daily kWh consumption by the days of autonomy without generation you want to cover, adjusted for the maximum depth of discharge of your chosen technology (50% lead, 80% lithium).
Do these batteries also work for wind or mini-hydro, not just solar?: Yes. Small wind and mini-hydro systems use the same 200-800 Ah AGM or OPzV banks at 24/48 V as an equivalent off-grid solar installation.

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