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49

30a19r バッテリー

Skip it

Pricing outside the sweet spot ($5272.56 avg) — this niche doesn't clear our bar today.

Market size 96Growth 17Conversion 75Competition 18Returns 98Price range 0Avg price 0Brand share 9Review moat 40Quality gap 88

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Market size

Incredible¥3.4M

¥3.4M/yr · 9K searches

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Conversion

Great7.1%

search→purchase rate — share of searches ending in a sale

Review moat

Okay2,493

avg incumbent reviews — the moat a new listing must climb

Competition

Bad78%

top-5 click share — a locked-up shelf

Growth

Bad-16.9%

90-day search growth — must beat 0% to launch

Brand share

Bad96%

top-5 brand share — brand-locked demand

Avg price

Bad¥5272.56

avg listing price — sweet spot $15–$100

Price range

Bad¥3758.57–¥6523.83

cheapest to priciest tracked listing — scored on the share inside $15–$100

According to Flapen's Amazon Japan niche tracking, 30a19r バッテリー is a ¥3.4M/yr Amazon Japan market (9K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Dec. Verdict: Skip it — 49/100.

Data updated Jul 31, 2026 · scored weekly · How we score niches

30a19r バッテリー market data

Units sold / yr
500–750
avg 0–100/product
Revenue / yr
¥2.6M–¥4.0M
units × avg price
Conversion rate
7.1%
Avg BSR
#284
Page quality
0%
Prime
36%
Sponsored
36%
Out of stock
0.0%
Avg brand age
91 months
Avg seller age
194 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 rising

Sellers

15

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

0%

  • アトラスビーエックス(Atlasbx)44%
  • エナジーウィズ(Energywith)30%
  • 台湾ユアサ (TAIWAN YUASA)10%
  • ノーブランド品8%
  • ヘキサ(HEXA)4%
  • FB(古河電池)4%

Demand & seasonality

Weekly Amazon search volume, last 89 weeks — -16.9% search growth over the last 90 days.
300200Holiday '24Spike '25Black Friday '25Holiday '25Spike '26DecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Dec · busiest ÷ quietest = 2.2×

Top 30a19r バッテリー products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%¥341K20%¥682K30%¥1.0M40%¥1.4M1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 11 tracked products in this niche — three views at once, no toggling.

What buyers say about 30a19r バッテリー

What buyers praise and complain about, mined from review topics.

What buyers love

コストパフォーマンス28%

“リーズナブル”

バッテリーの内蔵16%

“クルマバッテリー”

総合品質11%

“トラクター用に購入、期待どおりの性能です”

充電9%

“充電済み”

サイズ全体6%

“サイズと電圧は大丈夫なので使えます”

耐久性4%

“GS、FB、Panaなどに比べて耐久性は如何にと今後に期待”

使用の容易さ4%

“何ら問題なく使用”

地元製造4%

“安心の国内メーカー”

組み立て/インストール3%

“早速取り付けて使用してます。”

安全基準3%

“安心の国内メーカー”

What buyers complain about

バッテリーの内蔵18%

“寿命がどれだけ保つか分かりません。”

充電8%

“後バッテリー5時間充填反応なし”

総合品質8%

“安い”

サイズ全体8%

“サイズが合わなかったのですが、運搬車のスペアとして使いたいと思いますます。”

漏れ防止8%

“液漏れ起こしてました。”

匂い5%

“箱と取説がバッテリー液で濡れて希硫酸の臭いがしてました。”

耐久性5%

“寿命がどれだけ保つか分かりません。”

不良材料/部品5%

“たぶんセルモーターに原因がありそうです。”

広告と実際の製品の違い5%

“古河バッテリとありますが、古河の文字はありませんでした。古河のホームページを見てもこの商品はラインナップにありません。”

コストパフォーマンス5%

“値上げばかりですので先に購入”

Common questions

Is 30a19r バッテリー profitable to sell on Amazon Japan?
The niche generates ¥3.4M/yr across 11 tracked products. 90-day search growth is -16.9%. Flapen's verdict: Skip it (49/100).
How competitive is the 30a19r バッテリー niche?
6 brands and 15 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 96% of demand.
What do buyers complain about in 30a19r バッテリー?
Top complaints mined from reviews: バッテリーの内蔵, 充電, 総合品質. The return rate is 0.4%.
When does demand for 30a19r バッテリー peak?
Demand peaks in Dec; the busiest month runs 2.2× the quietest.
What does it cost to enter the 30a19r バッテリー niche?
Listings span ¥3758.57–¥6523.83; the average listing price is ¥5272.56 (sweet spot $15–$100). The average incumbent carries 2,493 reviews — the moat a new listing must climb.