# 12 V solar batteries > 12 V off-grid solar batteries: more than 30 Trojan and Long models from 33 to 230 Ah in AGM, gel and flooded deep cycle. Buy online, final price with VAT. **Category:** [Beginning](https://bateriasonline.es/en/) → [Battery types: starter, deep cycle, traction and stationary](https://bateriasonline.es/en/batteries) → [Deep cycle batteries](https://bateriasonline.es/en/deep-cycle-batteries) → [Solar batteries for off-grid systems](https://bateriasonline.es/en/off-grid-solar-batteries) - **Canonical URL**: https://bateriasonline.es/en/12v-solar-batteries - **Language**: en ## Description 12 V deep cycle solar batteries from Trojan and Long, AGM, gel and flooded. Compare capacity and buy online with VAT included. ## 12 V batteries for solar installations A 12 V solar battery stores the energy from your panels for cabins, off-grid homes, farms, telemetry and small systems. In this voltage the battery is installed as a single block or combined in series for 24 or 48 V systems. We list more than 30 12 V solar batteries from 33 to 230 Ah: 29 from Trojan and 3 from Long. ## Technologies and references - **AGM** (20 models): Trojan SAGM 12 105 (105 Ah), SAGM 12 135 (135 Ah), 12-AGM and T1275-AGM (140 Ah). - **Gel** (5 models): Trojan SSIG 12 120 (107 Ah), SSIG 12 145 (132 Ah), SSIG 12 170 (153 Ah) and 5SHP-GEL (125 Ah). - **Flooded** (7 models): the most economical option per Ah, but it needs periodic topping up and ventilation. To size the bank, add up your daily consumption in Wh, divide by the voltage and allow for the depth of discharge recommended for the technology. Compare with other [100 Ah deep cycle batteries](https://bateriasonline.es/en/100ah-deep-cycle-batteries), see the whole [Trojan batteries](https://bateriasonline.es/en/trojan-batteries) range or go back to [solar batteries for off-grid systems](https://bateriasonline.es/en/off-grid-solar-batteries). ## Frequently asked questions ### AGM or gel for a solar installation? Gel tolerates deep and slow cycling and high temperatures well; AGM accepts higher charge and discharge currents. Both are sealed. ### Can I mix batteries of different capacities? No, a bank should always be made of identical batteries of the same model and age. ## Choose by brand The same 12 V solar batteries, filtered by manufacturer. Each brand has its own page with all its references and a buying guide. - [Trojan batteries](https://bateriasonline.es/en/trojan-batteries) (29) - [Long batteries](https://bateriasonline.es/en/long-batteries) (3) ## Products in this category | Product | Brand | Price | |---|---|---| | [Trojan 12-AGM · Solar battery 12V 140Ah](https://bateriasonline.es/en/trojan-12-agm) | Trojan | 955,21 € | | [Trojan SAGM 12 105 · Solar battery 12V 105Ah](https://bateriasonline.es/en/trojan-sagm-12-105) | Trojan | 648,47 € | | [Trojan SAGM 12 135 · Solar battery 12V 135Ah](https://bateriasonline.es/en/trojan-sagm-12-135) | Trojan | 727,85 € | | [Trojan SAGM 12 205 · Solar battery 12V 205Ah](https://bateriasonline.es/en/trojan-sagm-12-205) | Trojan | 1.162,23 € | | [Trojan SPRE 12 225 · Solar battery 12V 204Ah](https://bateriasonline.es/en/trojan-spre-12-225) | Trojan | 922,47 € | | [Trojan SSIG 12 120 · Solar battery 12V 107Ah](https://bateriasonline.es/en/trojan-ssig-12-120) | Trojan | 429,53 € | | [Trojan SSIG 12 145 · Solar battery 12V 132Ah](https://bateriasonline.es/en/trojan-ssig-12-145) | Trojan | 531,65 € | | [Trojan SSIG 12 170 · Solar battery 12V 153Ah](https://bateriasonline.es/en/trojan-ssig-12-170) | Trojan | 597,41 € | | [Trojan SSIG 12 230 · Solar battery 12V 209Ah](https://bateriasonline.es/en/trojan-ssig-12-230) | Trojan | 804,78 € | | [Trojan SSIG 12 255 · Solar battery 12V 229Ah](https://bateriasonline.es/en/trojan-ssig-12-255) | Trojan | 897,19 € | | [Trojan SSIG 12 95 · Solar battery 12V 87Ah](https://bateriasonline.es/en/trojan-ssig-12-95) | Trojan | 392,39 € | | [Trojan T1275-AGM · Solar battery 12V 140Ah](https://bateriasonline.es/en/trojan-t1275-agm) | Trojan | 667,97 € | | [Trojan 24-AGM · Solar battery 12V 76Ah](https://bateriasonline.es/en/trojan-24-agm) | Trojan | 535,18 € | | [Trojan 24-GEL · Solar battery 12V 77Ah](https://bateriasonline.es/en/trojan-24-gel) | Trojan | 621,61 € | | [Trojan 27-AGM · Solar battery 12V 89Ah](https://bateriasonline.es/en/trojan-27-agm) | Trojan | 591,72 € | --- *bateriasonline.es — Batteries and accessories · 2026-11-11*